Thanks for sharing these great sites
This is a great little site for previewing/sharing your intial web design concepts to clients or for critique, and they have some great ideas they going to soon implement on the site.http://get.prevue.it/53083
( ^ yes it is an affiliate link, you need to share to increase your storage limit on the site)
Let’s move up this thread a little bit. Found this today, pretty useful.
Get the average color palette from an image. I know there are some built-in tools for this, but this is online, free and simple. Maybe missing that it would export something more than the current CSS format, though.