I am starting to work on Adsense stuff again, and a somewhat new blog of mine is starting to rank for keywords finally and I have been trying to figure out what settings are best for optimizing earnings. Right now I have 2 skyscrapers on each side (160x600) and a large rectangle above the posts. I always thought that this layout was best for me, but what I'm more confused about is the settings for these blocks. Like what colors ideally should you aim for visually ? For stuff like Border/Background/Text/Title/URL ? Also should I set these blocks to both image&text ads or just text ? I have seen a lot of opinions on this.