It seems to me, you've decided on these colors. If it's so, just go ahead with it and heck care about psychological effects or what else. As long as you think it's gonna work for you. Not everyone will go for beige, blue or light pink. we r all structured differently. the colors tat relax 1 may just make someone else puke and get depressed. so i say.... if you like it just go ahead. Go Kinokuniya or pageone's ID section to do some research... there'll sure hv something to inspire you on how to go about doing it.