Layers Panel in HTML

A little more from the Painter 12 redesign in HTML, for fun (again, this isn't associated with Corel). This is all functional HTML, CSS and JavaScript; no images except the icons. It uses the flexible box model spec for layout of most of the content.

The color needs a little work. Painter's interface uses a cool gray by default, which looks really nice, but when moving into lighter values, it is a little more difficult to retain the coolness along with the appropriate value and saturation. Any tips?

Edit: Since posting, colors have been fixed and all neutral grays have been replaced with cooler versions that match the main color scheme. The solution was as simple as mixing colors in Photoshop.