You could always get some extra silicone tubing to put around the ht leads. Then it'll match the rest of your setup. Just make sure it's flexible and a few mm wider than the leads themselves.
Cheer guys but after searching ebay, i've found you get get pretty much every colour ht cable by the metre for like £2 Makes me wonder how magnecor can charge £100 for 1 metre of cable with a few crimps and plastic bits :S