I wrote an article for the August issue of MSDN Magazine. An editor saw Robby's and my video for MIX and wondered if one of us could put our thoughts down in a page.
It’s short on technical details and heavy on the “philosophy” of WPF. Let me know what you think.
Update 1: Oh yeah, you can get the color picker code (with the cool style) on the community site as part of my Bag-O-Tricks.