Here are some dock floors that I made using images of hardwoods.
My favorite is the Cocobolo one (Top Image), but the Purpleheart (Middle Image) is second. The Paduak (Bottom Image) didn't turn out as well as I thought it would. I guess it really depends on your background.
I also included my app indicator. I don't love it, but its bigger and more noticeable.
Inside the zip is a Dock Images folder with the Dock "floors" in separate folders. I haven't customized the Dock Separators at all. Just drag the indicators and the images from whichever wood you like into /System/Library/CoreServices/Dock.app/Contents/Resources
AFTER backing up and deleting the originals from that location.http://genebogart.com/OJ/DockImages.zip