Maybe you should change the background to all white. And have the outer layers like the border color and things back to that rainbow color. I say white because you logo will shine in it. The buttons look plain. You should make the buttons more fuller, not flat.
the background is a little too much. remember: less is more. make sure ur site looks sleek and professional. i also don't like the shading on the title. too much. and dont use "U" instead if "you". it seems unprofessional. have someone go over your writing.
Change the menu, sharpen the logo and something about your background. And drop the text effect that says "secret design". Btw, when i think of the word "secret" i don't think about rainbow colors, more darkness, or mystical. But keep up the work!