Semi-offtopic question, if I were to go to the shop and buy a piece of clothing colored with "normal" means, which colors are generally the least taxing on the environment? Some time ago I tried searching for an answer to this question online, but I couldn't find anything useful.
The difference in any choice you could make would be orders of magnitude less significant than a rounding error. How they are cleaned and how often they are worn out and replaced, though?