Just a nice littl online tool, which may just help you out when you are busy designing some graphics and need some color assistance. Sphere over at ColorJack gives you several nice features regarding choosing colors for various uses. I don’t think I am going say much more, because it is really about you being able to explore the world of color and color theory.

ColorJack Sphere Normal Sixtone Screenshot

ColorJack Sphere Deuteranopy Screenshot
(Via Digg)
There’s also a bunch of tools for usability, too.
So you don’t just pick complementary colours, but colours that are high enough contrast to not leave visual impared visitors wondering what the hell they’re looking at, which you can download and run from your own computer, as I have.
There’s also a web-based complementary colour picker by Adobe called Kuler…
Thanks for the links, those do look like some very useful tools.
You have no idea how much bother I had posting that comment!
Don’t know what was happening and it was driving me mad…