Its all about color choices man, this one needs a better color selection.

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that aquamarine or turqoise on the bottom is way too bright ;

darken it all a little bit and it might be better.

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I kind of like the colors, but they are a bit harsh. You're really onto something with the vector work though.

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Ok, I love you for choosing to work with the art museum in Milwaukee. EXCELLENT choice of subject matter. As for colors, I would say just stick with what it looks like ***edit: meaning the real thing - stick with what the real thing looks like***, maybe do a grayscale or something. If you were to work on the colors, I would definately have just found a new wallpaper. But as it is, I just can't use it. Nice vector work, just don't let it go to waste. I'll hold off on the rating for now...

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actually, i think the background is the color that needs changing. try a greeny blue color.