Re: Advice - Wildly Uneven Color
Yep, what he said, darker colors require more coats and attention to detail. It is best if you can start with a tinted primer, but it's not a necessity, basically you're just going to have to apply more coats.
What is critical for best overall coverage is to apply the paint properly. You want to keep the roller loaded with sufficient paint to apply an even coating across the wall and you always want to be working in a wet edge to prevent roller and overlap marks.
As you are working an area, before you move on, make sure that the paint you just applied is evenly spread and coating the area well. Go back with more paint or more passes with a semi-dry roller to even the area out.
Let the paint thoroughly dry, then apply your next coat.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!