What are some really cool designs i could paint my nails?

I have a lot of french manicure colors, but I also have some reds and a dark plum color. I want to do a cool but simple design on my nails, any ideas? Pics would be nice but arent neccasery, thanx!What are some really cool designs i could paint my nails?
do something different like the dark plum with lime green swirls





or maybe even something like this =)





http://farm1.static.flickr.com/156/38921鈥?/a>