to paint or not to paint, that is the question

so here i am in my new beautiful home wondering if i shall paint. do i want to color these near perfect white walls? i don't know. i have some worries about that. i know it will look good, but once i have all the colors up will it look like a rainbow in my home. i like very clean cut straight lines. will i get that same look if one room is a gray blue while another is a butter yellow and another is a mocha brown? i don't know...someone tell me what you think? let me know what you have done and how you feel about the color in your home. maybe i should start upstairs and see how that goes because i have a really pretty rose petal pink and a baby blue with chocolate brown stripes that I am really excited about. Oh yeah and then I have to somehow figure out how to incorporate spider man into bennett's bedroom without it looking to much like an elementary classroom. anyway, your thoughts would be greatly appreciated