Check out the two patterns the "Random Stripe Generator" as shown on KissYourShadow blog made from four colors I selected. The generator is used to help you figure out random stripe patterns for your knitting...

And it is just plain fun! Pick your colors (at least 2--I picked 4 in the two examples shown here) and pick the number of rows and watch the stripe pattern appear ...hit the "refresh button" and see more striping combinations. I hit "refresh" over and over again and was mesmerized. Go to KissYourShadow to PLAY with this cool tool.

Here is what the author, caitlind, says:
"I wrote this script to generate random stripe patterns for knitting sweaters, scarves, blankets, etc. It'll give you an idea of what the finished sweater will look like, but it still leaves some unpredictability to the stripe pattern.

Thanks to Blather Magather for the tip on the fun new tool to play with. My kids have had a bunch of fun with it too!

(Graphics made with the Random Stripe Tool on www.KissYour Shadow.com)