I would advice you to add at least a few words to your site, that it would be clear what about is it! If I would not see the title of site, then I probably would not get the point. First thought I saw it was, that it is some search engine. So, if you want to attract more visitors then maybe you could make it more user-friendly!
To be honest I like it... just one thing... I believe there is a serial-coder (killer) who is creating this kind of webapps showing different background colors... but why not using a nice selection of colors instead of absurd random colors??