I finally solved it. Another time I wanted to make a cool design so I had all of the middle colors different from the outside colors.

I always used to solve it, but I cheated a little. When I boought the cube, it came with a little book that told the best technique to solve it. I could get the top all one color and 2/3 of the other 4 sides. The book also gave ways to get cirtain things right at the end, so I copied those.

I don't know where the book went. Lost in my room probably. I think I can solve it every time now though.