I made these eight cards yesterday for a monthly swap that I often take part in. The theme was "animals". When these swaps roll around, I tend to not have enough paper to make all the cards the same; so I used the "color combination" tool from http://www.scraptitude.com/colorcombo/ and came up with lots of different combinations with the paper I did have. It's so much fun to try these different combinations. I think we all tend to gravitate toward the same ones over and over.
I really enjoy participating in these monthly swaps. I like the challenge of working with a theme you didn't pick. If you have a chance, participate in a swap or try the color tool above.