@V\_ A little this... a little that. A spot of this and a dash of that other. Then a drop of the other one next and a bit of that one with a splash.
And if you don't happen to like a certain color then paint over it... while it's still wet even. If you don't like it then wait until it drys!
@V\_ Are you staying long or moving in a couple years? If you could move, stay neutral (off while, clay, light tan). If you're there for life go all out! Just know dark purple, dark green, dark blue are hard to paint over, from experience.
@MrGibber, I plan on staying longer. Moving is way too much work to do it more than every five to six years. And thanks for the input regarding the dark colors. I did not know this until now.
@V\_ Yep, even thee coats of a lighter color didn't do the trick. I had to prime all the dark areas (a bit complicated, but think Dad can you paint a city scape, ok) with Kilz product. Expensive and doesn't go that far, but it worked. After a full coat of Kilz, I was able to return the walls to an off while.