I GOT AN ANSWER TO THIS!!
So, bright colors are very iffy because if you don't match them right, the character will be hard to look at and not that appealing. So take Lipse here for example. By keeping the color pallette simple yet still bright and chaotic to match his character, she ends up having a nice, recognizable design! Meanwhile if I were to, let's say, make everything a different color and nothing be the same shade, the character would be confusing and too busy.
So all and all, yes. It is ok.