The colors are too much, but all the colors, all the time? I know, no acting, no plots, no nothing but the color but I have to admit, they do color real well.
So how do they do it for everything? Just hit the saturate button in post production? Hire some pretty girls and you’re Bob’s rich uncle?
I don’t have an answer to the question, and I don’t think that I’ve ever watched more than 2 minutes of that show… except for one time. When we first got our HDTV that was the channel/show that the TV first found something on and we saw David Caruso in all his wrinkled and colorful glory. Seriously, we did watch that show for a while that night and because the colors did look pretty cool on an HD set.
Digital colour grading is a simple affair (in its complex way). You can give it a colour wash over the entire finished edit, or adjust only certain colours to be more golden or less blue, or you can use a filter on the lens. They probably do a combination of these kinds of things.
I hope you watched the crossover episode when CSI:Vegas introduced CSI:Miami. Horatio was always standing in a separate room with his own light. Very cool.
Anyways, fiddling with photo color is piece of cake in Photoshop, just move the sliders for the curve of every color channel (RGB). I imagine it works much the same for video.