Get cheap Cable wraps from any electronics shop. Cut in lengthwise with a sharp blade nd insert the Idecable after folding in triagonally. seal the wrap with some coloured or transparent sticky tapes.
see the pics.
U can do this to all cables inside ur PC for a neat look nd better airflow.

The grey one is cables from PSU nd the black one is the IDE. I on my work with more wrapping nd getting some good coloured tapes nd will post more pics in 2~3 days.