How can I hide these ugly fan wires(the red/yellow/black doesn't match my build)?

[GrannyHammy]

I've recently bought a pack of four fans, but didnt realize the color of the wire would be so ugly. Is there anyway i can hide it.

 

[kanewolf]

Sleeve them -- https://www.youtube.com/watch?v=bcXKPn_Mf0g