Our characters all have individual colours (like weird power rangers) so I was planning on having specific colours that carried through all of their designs (similar to the red, blue and black of the MCs in Gurren Lagann) which compliments their personal colour. But then they might clash with the BGs. Should I try and use similar colour schemes throughout my sprites and the BGs, so they don't look horrible together? Or should I just not worry about? As in there are examples where it looks perfectly fine despite the differing colour palette.
Also I'm wondering if it would look okay if the sprites were painted (rather than inked/coloured like a manga), whilst the BG is inked. Are there examples where this looks good or nah? I would prefer if both of them were painted (since that's what I'm good at) but that's not my friend's specialty although she's more than willing to cooperate with me on that.
For any of these point could you give examples for or against? I'm a visual person, so I need examples to understand stuff

