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About Paintbrush
Rainbow Riot is a fantasy gene that includes vivid rainbow color alleles. Rather than affecting the body, the paintbrush trio only acts on the mane and tails of horses. It creates colored streaks in a range of hues and intensities. Paintbrush paints the hair rather than changing pigment so it acts quite differently to genes like watercolor. Paintbrush is not changed by the base color** (or even lighted by gray). It covers everything; white markings, axiom inversion, chimera, everything. It also only shows if it is on the primary set of DNA for chimeras. The issue of chimeras will only come up if you merge horses as RGS sales always add the gene to BOTH sets of DNA.

**Note it is often not 100% opaque so the base color might slightly show through but does not otherwise interact with paintbrush in any way.

Color Types
Paintbrush comes in three color types, cool, warm, and prism. Paintbrush Cool results in streaks of blues, greens and purples, even the occasional silver. Paintbrush warm gives streaks of reds, oranges, yellows plus a few maroon and magenta shades. Paintbrush Prism is straight ROYGBP rainbow hues.

Expression
Paintbrush only requires one copy to show and horses having it will have "Painted" in there color name.

Paintbrush has an unusual mode of expression not found in real life or other game genes. One copy of paintbrush results in washed streaks of the color type. Two copies result in a bolder more opaque look. If two copies of warm are added you will get one solid warm color, or more commonly, two warm colors blended in the mane and tail. Same for the cool variant. Prism het or hom always results in random rainbow colors with the hom variant being more vibrant.

When a horse has two different paintbrush variants the allele on the dam's chromosome (the second listed allele) will always be the more predominantly shown color. and partially cover the sire's chromosome resulting in a huge range of color possibilities.

Colors are random and can be drastically changed by a reroll (not refresh) of the horse's image.


Examples:
Het Warm Horses
Hom Warm Horses
Het Cool Horses
Hom Cool Horses
Het Prism Horses
Hom Prism Horses
Prism and Warm Horses
Prism and Cool Horses

Note all variants may not exist on this server yet. As people create and breed more paintbrushes more examples will show.