HTPC Build – iR Receiver

Debating between simply swapping my current PC guts to a new system, which won’t support the internal iR receiver because no power to the USB ports when powered off, or building something new.

Question I have is, the FLIRC STREACOM, or if another brand I’m open to that… I wanted to install into a case like the Cooler Master Elite 110 that has a mesh front. What I’m curious about is, whenever you get iR receivers, they always seem to have that dark red plastic front. The official Streacom cases have a small red plastic window the flirc sits behind, currently I have an HP iR receiver that has a red plastic front as well.

What is the purpose of the red plastic? is it necessary? Also, if I cut a bit of the air filter mesh out from inside the front bezel, would the iR be visible enough for the remote to work?

I like the case and it holds 3×3.5″ HDDS which is what I need… from what I can tell, the Flirc should fit inside the bezel next to the fan, just not sure if I need to cut a hold in the bezel for a better signal, and if that hole needs some sorta red plastic filter or not.