Colours - Rattypaedia

Coat Colours

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Brandywine Avon and Brandywine Cole

Agouti

This is the normal colour of the rat with no mutated genes. The coat is a combination of black, red/brown with a grey or grey/brown belly. The agouti gene produces banded hairs giving a ticked appearance to the coat.

NFRS Standards, 2009: To be a rich ruddy brown, evenly ticked with black guard hairs. Base fur dark grey to black. Belly fur to be silver grey. Foot colour to match top. Eyes black.
Genetics: ABCDPRM. Rats heterozygous for B, M and P sometimes have better colour. Rats heterozygous for R may be insipid while rats heterozygous for D are dull.

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Apricot Agouti (shown in New Varieties): NFRS Standards, 2009: To be a pale apricot, evenly ticked with silver guard hairs. Undercolour to be ice blue down to the skin. Belly colour to be a pale cream. Foot colour to match top. Eyes Red.
Genetics: Genetically pink eyed blue agouti A-B-C-ddpp.

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Argente Creme: NFRS Standards, 2009: The back of the rat to be a delicate shade of apricot, ticked with silver and shading to cream on the sides and face. Head marking not to be present. Undercoat white, belly white. Eyes Red.
Genetics: Genetically a chinchillated silver fawn.

Matrix Moonshine, Black

Black: NFRS Standards, 2009: To be a deep solid black, devoid of dinginess and white hairs or patches. Base fur to be black. Foot colour to match top. Eyes black.
Genetics: aa

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Black Eyed White: NFRS Standards, 2009: To be as white as possible, devoid of any creamy tinge or staining. Any coloured hairs to be severely penalised. Eyes black.
Genetics: P h^eh^e

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Blue Agouti (Opal): NFRS Standards, 2009: An attractive blend of mid-blue ticking over a medium fawn ground. Undercolour to be blue down to the skin. Belly colour silver. Feet dove grey. Ears and tail to be covered with blue hairs. A brown tinge will be judged as a fault. Eyes black.
Genetics: A-dd

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Blue Point Himalayan (includes both eye colours) (shown in New Varieties): NFRS Standards, 2009: Body colour to be white, free from stains and even throughout. The points to be a medium smokey blue. Eyes Red or black.
Note – Colour Areas:

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Blue Point Siamese (includes both eye colours) (Guide Standard): NFRS Standards, 2009: Body colour to be silver beige that shades into deep blue colour at the back and hind quarters, down towards the belly and on the face towards the nose. The shading shall be even and darkest at the nose and the base of the tail. The rat has to be without streaks, odd coloured or white hairs or patches.
Belly colour: To be light silver beige.
Ears, tail, feet: As blue as possible.
Eye colour: ruby or black
Genetics: a/a ch/ch rb/rb* (plus unproven genetics in the case of black eye)

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British Blue: NFRS Standards, 2009: To be a deep steel blue without any brown coloration. Colour to be even with the belly colour matching the top. The colour of the fur when parted to be blue grey down to the skin.
Genetics: aadd

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Buff (shown in AOC self): NFRS Standards, 2009: To be an even, warm magnolia with no sign of dullness or greyness. belly colour to match top. Eyes to be dark ruby.
Genetics: aarr or aabbrr

Burmese

Burmese: NFRS Standards, 2009: To be an even, rich mid-brown, devoid of dinginess, silvering, or patches, with darker points of the same shade. There is to be a strong contrast between the points and body colour. Eyes black.
Genetics: genetics currently unproven and being researched.

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Champagne: NFRS Standards, 2009: To be an evenly warm beige, with no suggestion of dullness or greyness. Eyes Red.
Genetics: aaBCDpp or aabbCDpp

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Chocolate: NFRS Standards, 2009: To be a deep, rich chocolate, as even as possible, devoid of any dinginess and white hairs or patches. Foot colour to match top. Eyes black.
Genetics: aabb or aaBBRr or aabbRr

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Cinnamon: NFRS Standards, 2009: To be a warm russet brown, evenly ticked with chocolate guard hairs. Base fur mid-grey. Belly fur as Agouti but of a lighter shade. Foot colour to match top. Eyes black.
Genetics: A-mm

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Cinnamon Pearl: NFRS Standards, 2009: Coat to consist of three bands of colour from the base up - cream, blue and orange, with silver guard hairs, to give an overall golden appearance with a silver sheen. Belly fur pale silver grey. Foot colour to match top. Eyes black.
Genetics: A-mmPepe (pearl is a dominant lethal gene)

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Coffee (shown in New Varieties): NFRS Standards, 2009: To be a rich creamy caramel throughout, from tips of the fur down to the skin. Colour to be even as possible, devoid of dinginess, white hairs or patches. Foot colour to match top.
Genetics: aabbmm

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Cream (shown in New Varieties): NFRS Standards, 2009: Body colour to be a rich 'Devonshire' (warm) cream colour with no odd coloured hairs or patches. Ears and tail to be pink. Eyes: black. (picture shows ivory next to cream)
Genetics: genetics currently unproven and being researched

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Golden Himalayan (shown in New Varieties): NFRS Standards, 2009: To be an apricot colour evenly ticked with silver guard hairs, with brown points on the nose, feet and root of the tail. Belly colour to be a pale cream. Top colour to be even carried well down the sides with clear differentiation between belly and top colour. Ears and tail to be lightly pigmented. Eyes Black.
Genetics: genetics currently unproven and being researched

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Havana (shown in New Varieties): NFRS Standards, 2009: To be a warm rich brown. Eye colour mid ruby, to harmonise with coat colour.
Genetics: aaBBmmRr

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Himalayan: NFRS Standards, 2009: Body colour to be white, free from stains and even throughout, with points a rich dark sepia. Eyes red or black. Note - Colour areas: 1. face - not to extend upwards from eyes. 2. ears - not to extend downwards from the base. 3. forelegs - not to extend upwards beyond the elbows. 4. hind legs - not to extend upwards beyond the ankle. 5. tail - not to extend beyond the tail root. 6. feet - to be solid colour throughout, devoid of any white
Genetics of red eyed: aac^hc or aac^hc^h selected for pale body colour and no shading
Genetics of black eyed: genetics currently unproven and being researched.
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Ivory (previously shown as Black Eyed Cream): NFRS Standards, 2009: Body colour to be very pale creamy white all over with no odd coloured hairs or patches. Ears and tail to be pink. Eyes Black.
Genetics: genetics currently unproven and being researched

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Lilac (Guide Standard): NFRS Standards, 2009: A pinky dove grey throughout, from tips of fur to skin, bluish tinge a fault. Foot and belly colour to match top. Ears and tail to be covered with grey hairs. Eyes very dark ruby or black.
Genetics: aabbCCddPPRrmm.

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Lilac Agouti (Lynx): NFRS Standards, 2009: To be an attractive blend of dove grey ticking over a medium fawn ground. Undercolour pale grey down to the skin. Belly colour silver. Feet dove grey. Ears and tail to be covered in grey hairs. Pinky tinge desirable, blue tinge a fault. Eyes very dark ruby to black.
Genetics: A-bbRrmm

Mink (shown in AOC self): NFRS Standards, 2009: To be an even mid-grey brown, devoid of dinginess, silvering or patches and having a distinct bluish sheen. Foot colour to match top. Eyes black.
Genetics: aamm

Kropotkin Chloe, Pearl

Pearl: NFRS Standards, 2009: To be palest silver, shading to creamish undercolour. Each hair to be delicately tipped with grey evenly over the whole animal. Belly fur to be creamy silver. Foot colour to match top. Eyes black.
Genetics: aammPepe (pearl is a dominant lethal gene)

Sophie (rescue), Pink Eyed White

Pink Eyed White: NFRS Standards, 2009: To be as white as possible, devoid of creamy tinge or staining. Eyes pink.
Genetics: Normally cc but other possibilities exist

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Platinum (shown in New Varieties): NFRS Standards, 2009: To be an even and bright shade of pale grey with a distinct ice-blue hue, with no suggestion of creamy, brownish or strong blue tones. Belly colour to match top. Feet pale grey. Eye colour red to ruby.
Genetics: Combination of an unrecognised brown gene (called mock mink) with blue & another unrecognised pink eyed gene.

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Platinum agouti (Guide Standard): NFRS Standards, 2009: A bright blend of pale grey ticking over a rich cream ground, with a distinct ice-blue hue. Undercolour pale blue down to skin. Belly colour pale silver. Feet pale grey. Eyes red to ruby. Strong blue or brownish tones a fault.
Genetics: Combination of an unrecognised brown gene (called mock mink) with blue and another unrecognised pink eyed gene. This is the Agouti based version

Powder Blue (shown in New Varieties): NFRS Standards, 2009: To be a pale dove blue colour, with pale silver base fur. Pale silver underbelly. Should be distinctively different to that of the slate colour of the blue rat. Colour to be as even as possible, devoid of dinginess, white hairs or patches. Foot colour to match top. Eyes Black or Ruby.
Genetics: aadd * selected for pale undercoat.

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Quick Silver (shown in New Varieties): NFRS Standards, 2009: To be an even and bright shade of blue grey with no suggestion of icy, creamy or brownish tones. Should be distinctly different to the icy blue tone of the platinum rat and the pale dove of the powder blue. Undercolour light blue to the skin. belly colour to match top. Feet grey, eye colour mid ruby.

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Russian Blue: NFRS Standards, 2009: Colour to be similar to blue cats and dogs. A soft medium grey-blue with a metallic sheen. Faint light speckling or a subtle ticked effect (heathering) is usual for this variety and is not a fault. Colour to be even, belly colour to match top. Undercolour dark blue down to the skin. Eyes black.
Genetics: Due to unproven gene rb* (d in USA). aarbrb

HGLR Golden Birdie, Russian Blue Agouti

Russian Blue Agouti: NFRS Standards, 2009: A blend of dark blue ticking over a fawn ground. Heathering of the blue ticking is normal for this variety and is not a fault. Undercolour to be dark blue down to the skin. Foot colour to match top. Belly colour silver. A brown tinge to the ticking to be considered a fault. Eyes black.
Genetics: A-rbrb*

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Russian Burmese (shown in New Varieties): NFRS Standards, 2009: To be warm, mid grey, devoid of dinginess, silvering, or patches, with distinctly darker points of the same shade. Faint light speckling or a subtle ticked effect (heathering) is usual for this variety and is not a fault. Eyes black or very dark ruby.
Genetics: Burmese genetics currently unproven and being researched. + rb/rb*

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Russian Dove (shown in AOC self): NFRS Standards, 2009: To be a warm pinky grey. Faint light speckling or a subtle ticked effect (heathering) is usual for this variety and is not a fault. Colour to be level throughout. Not to be confused with platinum or lilac. Belly colour to match top, undercolour pale grey to the skin. Eyes Black.
Genetics: aammrbrb* or aabbrbrb* or aarbrb* + unrecognised brown gene known as mock mink.

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Russian Silver (Guide Standard): NFRS Standards, 2009: To be a pale blue-grey. Faint light speckling or a subtle ticked effect (heathering) is usual for this variety and is not a fault. Colour to be level throughout. Belly colour to match top. Undercolour to be as pale as possible. Brown, yellow or pinky tinges to be faulted. Eyes Black.
Genetics: aaddrbrb* or aabbddrbrb* or aabbddmmrbrb* or other possible combinations.

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Russian Silver Agouti (Guide Standard): NFRS Standards, 2009: A blend of light blue grey ticking over a warm creamy fawn ground. Undercolour light silver grey down to the skin. Belly colour pale silver. Pinky tinge to be a fault. Eyes black.
Genetics: Agouti form of the above.

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Russian Topaz (shown in New Varieties): NFRS Standards, 2009: Top colour a pleasing warm shade of orange-cream evenly ticked with silver to silver-blue guard hairs. Undercolour must exhibit a distinctive blue cast close to the skin. Belly and throat to be cream. Feet to match top colour as close as possible, but a lighter shade acceptable. Eyes may be any shade of red to dark ruby but pink eyes undesirable. Slight heathering not to be faulted.
Faults: Dark, dull or too pale top colour. Uneven or lack of ticking. Pink eyes.
Severe Faults: Lack of blue undercolour. Very pale patches or prominent white eye circles.
Genetics: a/a r/r rb/rb*

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Sable Burmese (shown in New Varieties): NFRS Standards, 2009: To be a warm dark otter brown with subtle darker points on the feet, tail, face, and ears. Devoid of dinginess, silvering, or patches. Contrast between points and body colour not to be overstated. Any suggestion of black in the points to be penalised. Eyes black.
Genetics: genetics currently unproven and being researched

Siamese

Siamese: NFRS Standards, 2009: Body colour to medium beige, gradually and evenly shaded over saddle and hindquarters towards the belly, being darkest at the base of the tail. There should be no white or very pale areas anywhere on the body, feet or tail. Tail colour to extend down the length of the tail. Belly to be light beige. Points to be rich dark sepia and shade evenly into the body colour. Eyes black or ruby.
Genetics of ruby eyed: a/a c^h/c^h
Genetics of black eyed: genetics currently unproven and being researched.

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Silver Fawn: NFRS Standards, 2009: To be a rich orange fawn, evenly ticked with silver guard hairs. Belly fur to be white. The demarcation between the top colour and white belly to be sharp and clear cut, devoid of irregularities and brindling. Eyes red.
Genetics: AApp

Tethys Jasper, Topaz Dumbo Rat

Topaz: NFRS Standards, 2009: To be a rich, golden fawn evenly ticked with silver guard hairs. Undercolour to be pale blue/grey carried down to the skin. Belly fur to be creamy silver. Top colour to be even carried well down the sides with clear differentiation between belly and top colour. Any tendency to sootiness or greyness of the top colour to be penalised. Eyes to be dark ruby (as dark as possible).
Genetics: AArr or AAbbrr

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Wheaten Burmese (shown in New Varieties): NFRS Standards, 2009: To be a mid sand colour, points to be distinctly darker than body colour. Base coat to be light brown. Belly colour to be pale silvery grey. Eyes black.
Genetics: genetics currently unproven and being researched