Andy,
Forgot to say, you need the finishing touch...
Remove one of the halon access plates on the roof and feed through a couple of mains powered party light chains. Fix them all round the roof, one chain going clockwise and the other anticlockwise, using the white cable tie brackets.
It looks really cool during computer room tours, especially if you get blue ones, and double especially if they have a setting for slow up and down glow.