It really isn't about color coding going in as much is it is about the GSM of the towels, AND what condition they are in.
Does the color actually matter?
It's been said it DOES.
Way back when I first started buying/collecting/spending WAAAAAAY too much on towels I read that darker towels are not as soft as lighter colored ones. Given that two towels are identical, just that one is black, the other is gold (for instance) the theory is the gold one will be softer. Now I used to think this had to be hoo-haa, that was until I bought some 360 GSM towels in different colors.
I'll go ahead and say it, the black towels are not as soft as the gold ones.
They also bled black dye for several (2~3) washes when new. Enough so in fact that I have some formerly gold ones that are more of an army green color now.
Bottom line is you'll start buying towels for a particular use. From there it really doesn't matter what color they are, just that they are used for the use intended, and ALWAYS used from a clean bin.
As they get more worn or more dirty you can mark the corner with a magic marker to let you know that although it MAY have been 'upper panel quality' at one time, it's now been relegated to 'lower panel' or 'interior, or perhaps just general duty. For instance... I have dozens of paint quality towels, but knowing that all the best ones ONLY get used on upper panels they don't have a mark on them. As I feel them shifting a bit I'll put a mark in the corner, (say a 1" line). That'll tell me I can still put them on paint, but not on the upper panels, say the back of fenders behind the wheels or bottoms of the doors. Those areas are generally dirtier than the top of the panel. But the back of the car is dirtier than that, especially the bumper(s). Rocker panels are even dirtier than that. So take a towel that used to live in the penthouse, with 2 marks it's now down in the basement.
The key is to visually and mechanically inspect your towels both BEFORE as well as AFTER washing. Don't just use your eyes, use your hands to feel the fibers, feeling with an open hand will sometimes find something that you didn't realize was there before you wash them. Then after washing, inspect them again, pulling out any trash you might find. Then finally after drying lay them out flat, one at a time and do the final inspection. With this method you'll always have the right towel, in the right bin, for the right job.
Color can come into play, but more often it's the type/brand/GSM of the towel that'll tell you what you'll use if for.
I sort them into bins based on GSM/purpose. I also keep the towels that I use in the bottom of the panels (for rinseless and waterless wash) separated.
:iagree:
Ask me how I know tenblade has (just a few) good microfiber towels?

(
And he's got a black one or two.)
