An orange color or black
Because brittle stars are very fragile. Interestingly, Brittle stars use this fragility to defend themselves by easily losing arm segments or even entire arms. This strategy works because they are...
Brittle star (Brittle stars, or ophiurids, echinoderms, closely related to starfish)
the color of the star indicates how hot the star is
Blue-violet. . . . . a good way to know the colors in order is ROY G BIV (red, orange, yellow, green, blue, indigo, violet).