RED, WHITE, and BLACK not orange whatever anybody says.
black, white and/or silver.
To hide from predator planets.
poisonous flesh
So the can camouflage from there predator.
gremlins
Lightning?
To create softball yellow, you typically mix a bright yellow color with a small amount of white to achieve a lighter, more vibrant shade. If you're starting with primary colors, you can mix yellow with a touch of red to produce a warmer yellow. However, for the classic softball yellow, pure yellow is usually the best choice with just a hint of white for brightness.
It blows up when seeing a predator. Its spikes could really hurt another fish while its sometimes bright colors tell the predator it may be poisonous.
Bright colors such as red, yellow, lime green
They have bright colors because when a predator tries to eat the frog, the bright colors warn the animal to not eat the dark frog only if it wants to die. That's why bees have bright yellow colors because it warns an animal if it gets close, I will sting you. And sometimes, both the predator and the prey lose because the animal doesn't get the message that the poison dark frog is dangerous, and eats it. The frog loses its live, and the predator may lose it's live too depending on the size of the animal.
They named it softball because the game of softball was derived from Baseball. The baseball had a hard core whereas the softball has a soft core, so they named it softball. Although the ball is not softball the core of the ball is soft.
A caterpillars colors and stripes usually warn the predator, and if not... then it will spit it out, for most can taste terrible.