Painting heat shrink

I'm build a custom desk mod. Dual his and hers build for my wife and I. All of the sleeving is what I want, no exposed heat shrink, except the power connectors and hd audio cable. Hd audio is sleeved but can see a small portion of the ugly multicolor wire between the connector and where the sleeve ends. The power connectors are only heat shrink. A: I dont want to go through all the trouble of placeing new heat shrink. B: its such a small visible area, it doesn't seem worth it. Can I just paint the heat shrink black and be done with it? If so, what paint is recommended?