Lots of mine end up pink too, but that's because I LOVE pink. LOL
When I'm not doing a pink yarn, I pick a main color then just use some contrasting or complimentary colors to add more values. I basically just don't think about it and see what happens. I've yet to dye a yarn where I didn't like the results in some respect.
I'm a firm believer in letting color do its magic. Odd color combinations have a magical way of turning out beautiful when dying yarn. Purple and orange is one of my favorite "odd" combos. Green and pink is another favorite.