The latest screenshots

Those small buttons at the left side of the window are togglable filters for the viewable items at the right. I just threw some of these together to test the system. In this screenshot for example, the filters from left to right: Paint, Bright, Yellow, Modern, Wood, Tile, Stone. Ofcourse there's gonna be a lot more filters, like Dark, Metal, Concrete, Brick, Retro, etc. Also those icons are just placeholders, especially the brush and the paint can! I'm gonna change the button you mentioned (the Bright button) to a sun or something.