Ah. I see what you're after. Yes, for something like this, the primary starting point would be to choose a coloring gradient that contrasts a brilliant bright color with a darker background color. Pure clear reds and yellows against the black, in the example you used. Also, depending on the program you use, you can increase the saturation and contrast within the program itself, or do it in a second graphics proggie as post-work.
There should be many coloring gradients available...check in the free stuff link in the Forum banner above.

RosemaryR
---------------------------
"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."