Fur Colors
Black
Blue
Brown
Cinnamon
Cream
Fawn
Ginger
Golden
Gray
Lilac
Orange
Red
Silver
Tortoiseshell
White
Yellow

Fur Patterns
Agouti - each hair has its own color
Calico - ginger + black + white
Cap and saddle - colored head and back
Classic tabby - swirling pattern
Colorpoint - darker on face, tail, paws
Blotched tabby - swirl pattern
Bicolor - two colors
Brindle - mixed tortoiseshell colors
Diluted calico - cream + grey + white
Diluted tortoiseshell - blue + cream
Harlequin - spotting + colored tail
Mackerel tabby - stripes on spine/belly
Magpie - Random spotting
Patches - patches of tortoiseshell color
Piebald- two colors
Solid - no pattern
Spotted tabby - spots
Striped tabby - stripes on spine/belly
Ticked tabby - agouti, striped legs/tail
Torbie - Tortoiseshell + tabby
Tortoiseshell - ginger + black
Tricolor - 3 colors; calico
Tuxedo - white paws and chest
Van - color on head and tail only

Eye Colors
Amber
Blue
Copper
Hazel
Gold
Green

Appearance Details:

• fur length (long, short, medium)

• nose color (pink, black, or both)

• whisker color (white, gray, black)

• Heterochromia (different eye colors)

• weight (overweight, underweight, etc)

• Height (tall, short, etc.)

• missing body parts (leg, eye, tail, ear)

• scars (scratches, burns, etc.)

• tufted ears or toes

• torn ear

• bobbed tail

• missing or twisty whiskers

• polydactyl - having extra toes

Sources
• https://www.omlet.co.uk/guide/cats/choosing_the_right_cat_for_you/ cat_coat_colours_and_patterns
• https://en.m.wikipedia.org/wiki/Bicolor_cat
• https://en.m.wikipedia.org/wiki/Cat_coat_genetics
• https://www.google.com/amp/s/amp.sacbee.com/entertainment/living/pets/article36548517.html
• see the sources list for "Cat Breeds"

More will be added later!