In cycles is there any way to change the viewport color and the material color at the same time. When I change the material color I have to go down in the viewport select the I dropper match the color. Is there way to change both colors at once.
Not that I'm aware of. You could use the Material view to match the colors but that asks a lot more from your computer. I did find a relevant script, but havent tested it myself. I just manually edit the colors :) http://blendervisionpro.blogspot.be/2014/12/copy-cycles-color-to-viewport.html