Hello From Scotland! Well, technically, it's hello from a Seismic Ship in the middle of the North Sea, but that's not particularly important. I've been recommended by a member on the Radio Control MSUK forum to post my question on here, as I need a bit of specialist advice from all you light experts! Basically, I am looking to build another PC sometime soon. I'm fitting lots of tasty UV-reactive components that look dull in normal light, but give off a lovely green luminescent glow when in the presence of UV light. Obviously, an ultra-violet fluorescent tube would be the most effective option, but they are not appropriate for PCs, due to their large power-draw and the heat they give off. So the only option are PC-specific UV cold-cathode tubes. Unfortunately, these cold-cathodes are poor; they give off far too much visible light, that somewhat masks the glow of the UV-reactive components, ruining the effect. I want people to look into the PC case and see lovely green glowing parts, not a purple back-lit effect. So my question is- are there PC case cold-cathodes on the market that are more effective and give off little visible light, while flooding the case with UV light? Otherwise, is there a product (plastic wrap, gel, soft material, polycarbonate, whatever) that I can use to wrap or block the cold-cathodes, which stops (or, at least, reduces) visible light, while allowing UV light to pass? Thank you. Mike