In my layout room I use fluorescent tubes with rigid plastic UV shield covers on the tubes. They do tend to warm the light color a bit, but that's a small price to pay for what they're doing. I bought the covers perhaps 20 years ago when people started talking about fading. So far, there's been no noticeable fading of anything. As Bruce suggested, you might want to look at some UV film to reduce the chances of your lights causing the fading.