This look can be pulled off, but it's hard, and you have not accomplished it here.
First of all, your background and your foreground -cannot- swap colors. Right now you've got white letters and white elements in the background, and because of that even letters with heavy black outlines get obliterated.
Multiple sets of high-contrast outlines (like the ones on "MX") are poison. They're hard to read and oftentimes literally hurt to look at. If you've got to add more interest to your letters, step the outlines down in a logical progression (light to dark, etc.) or possibly add a SUBTLE gradient to the face of the letters. Anything too busy and they'll get sucked into that background.
Speaking of outlines, it's good that you're using them on a design like this, but consider thickening them up quite a bit. You basically want the outline of your lettering to be thicker than any other linear elements that are going to run behind your text, if that makes any sense. Also, please note that outlines are sort of a crutch, they work, but there's ways to create legibility in a design that doesn't create as much noise.
Also note that your URL down at the bottom is getting pretty badly lost. Without getting into a long discussion of physics and color theory, just bear in mind that that colors that are on the extreme left and right of the spectrum (red and blue/violet) generally read as darker colors, no matter how bright they are. Bump your website up to white or yellow (assuming you take the yellow out of the background) or even green if you're feeling punchy. See if that doesn't pop more.
Basically, the one rule that really matters here is that if someone can look at this and and understand it while they're driving by at 65 miles an hour, mission accomplished. If not, back to the drawing board.