At one time only black or white cable ties were available and identifying which cables were 1 meter, 2 meter and 3,4,5,10 meter lengths was not easy.
Now I have 6 different coloured cable ties and know by colour which are the relevant length. Saves loads of time.
I really like these from Thomann because they have metal buckles and are velcro, so do a great job of securing my cables.
I will be buying more.