EDIT I want to understand the reason for intense animal colors. I.e. I don't want to understand the variety of the colors, just the intensity.
The Wikipedia page for Cethosia biblis says, the intense colors are a "warning" to enemies, which means the enemy is warned by the colors that eating that butterfly may result in death.
[...], while the intense color of the dorsal sides of the wings is a warning to predators that the Red Lacewing has a bad taste, deriving from the poisonous host plants of the caterpillars.
In general it would make sense to me, that animals have learned something like "intense colors means danger". Although, I don't know how good animals recognize colors, but that would be another question.
But poisonous animals don't have necessarily intense colors. E.g. Sydney funnel web spider is very poisonous, but doesn't have intense colors, while on the other side some very intense colored butterflies are not poisonous like explained here. As a result, the explanation given in the wikipedia article doesn't make sense to me. I estimate it very unlikely, that animals learned something like "intense colors means danger", because there are of course examples where this is not true.
Therefore, I don't think the "Golden poison frog" has survived because his enemies recognize his intense colors and conclude "eating this frog will result in death" are hence hesitated to eat him.
My question is: Why does wikipedia say then, the intense colors of Cethosia biblis are a warning for their enemies?
PS: I just found the correct terms for my thoughts ("aposematism" and "batesian mimicry" and are reading now the appropriate wikipedia article. I didn't knew them when I've asked this question.
PPS: to avoid confusion: @DavidBlomstrom answered this version of my question https://biology.stackexchange.com/revisions/42554/2