Papillons come in every color of the rainbow; however, 'Pure Colors' are exceptional rare.

If the detailed text option is selected, the pets display their color purity in Red, Green, Blue format in your Data HUD. This is a number that ranges from 0.0 (no color) to 1.0 (full color). For example, a 1.0,0.0,0.0 would be 'Pure Red', and almost impossible to achieve from a starter. Given that the pets use a three-point offset (1.000) when determining values, that's literally a 1000x1000x1000 possible color/rarity range. Even getting a single 'Pure' field of 0.0 or 1.0 in a starter is considered good luck!

There are several bastardized shades that offer a smaller boost to mutation chances. For example, full-orange would be (1.0,0.5,0.0). The 0.5 counts towards mutation chances, though less than a "pure" color.

When breeding, the colors of the parents are taken into account and compared for a possible color range, with a slight random variable in either direction. For example, breeding a butterfly with 1.000 red and 0.500 red would result in offspring with an 0.5 to 1.0 possible color range, (plus or minus as much as 0.2, based on the chance of mutation). Results greater than 1.0 become 1.0, and below 0.0 becomes 0.0. If two 'Pure' (1.0) pets are bred together this creates a maximum range of 0.8 to 1.2, for example, which makes it highly likely that a pure, or close to pure offspring emerges.

The more 'Pure' values a pet has, the greater the mutation potential in ALL fields. A 1.0,0.0,0.0 red pet would have a significantly higher chance of created mutated offspring than other pets, due to having THREE pure fields.

The rarest of the rare colors are vectors containing 0.0 and 1.0, though the actual color vector plays no part in the rarity chances aside from increasing mutation potential. It's important to note, however, that the higher your mutation chance is, the more of a possible difference breeding can have on wing colors. For example, a 5% mutation chance is +/- as much as 0.05 coloration of the offspring (mating a mother with 0.4 red and a father with 0.7 red with a 5% mutation chance, for example, would give your offspring a range of 0.35 to 0.75). Obviously, the higher the mutation chance, the better your chances of 'purifying' your colors.