Jeroen, As the others have stated before me, I am not wild about the combo of colors the yellow-green and the blue. I think if I were stuck on the color pallete of blue and yellow, I might go with some very soft pastels of both the blue and yellow, and because the pastel yellow would be confused somewhat with the beige background (where the text and the image is) I would go with a white there and see how it looks. It looks like you did very well on the compositon/layout of your site, it looks easy enough to navigate. Brenda :)