Also check out a version I made with the demcra logo and a link icon for demcra All animation is css and javascript is used for class toggling. Also this is version one with 3 colors in a triangle instead of 4 in a square.
These use the screen blend mode (Which means if you are using internet explorer, windows xp (or earlier), or a mobile device, it may not work as intended. On mobile, click the text to activate and click the background to deactivate). Also, you need javascript enabled for this to work!