I've been building the site and its better than ever. I've got 3 sections of free Pixel-Art puzzles, math coloring, coloring by number, and internet memes. The free puzzles have a mouse rollover graphic to show the before and after. I'm worried that my site might chug a little on different browsers/computers. I'd love some feedback on that and the visual aesthetic of the site. Thanks guys.

Coloring Squared