I guess people like the uniformity by using the same color for everything. In my opinion, some contrast looks good if done properly. All one color gets boring very quickly. That's why I threw in some of the uv blue cathodes at the top, just to add a bit of contrast and to somewhat "sectionize" the case.
Like said before, I think a blue tint to the tubing would be kick ass since it would contrast the green wheel and match the uv blues on the other side of the case. I'd like to go with some blue uv dye, but I'm just a bit lazy to order such a small item and paying shipping on it. I don't think there are any stores around me selling uv dye.
I considered wrapping the tubing with uv tape. At least then I could remove it if it ever gets overly ridiculous. But after thinking about it, seems a bit crummy and crude.
Of course contrast could look good if done properly, but only IF done properly. When I light up all the cathodes (green, red, and uv blue), it looks like a christmas tree! But yeah...insane.
To venture off the subject of lights, how about organization? Honestly, I think my case is a gigantic mess. I found it so hard to hide the wires with the powersupply so far from the motherboard. I was actually able to hide a crapload of wires behind the motherboard tray, but even then, still not enough. I'd open the side panel and picture it, but I may not be able to get the panel back on. It was a big squeeze. Your thoughts on organization?