I've just been playing with Image Magick...it's so cool

Here are some demo URL's. I just need to get the FreeType library installed to be able to work with text and then I'll be on fire

http://perlwhirl.com/...x=5;by=5;rx=10;ry=10

You can play with the parameters. Not all colors are recognised but most common ones should be like, yellow, green, blue, red.

here are a few examples...

http://perlwhirl.com/...x=5;by=5;rx=10;ry=10

http://perlwhirl.com/...;bx=5;by=5;rx=2;ry=1

http://perlwhirl.com/...30;by=30;rx=15;ry=15