A good thought indeed. I have an old nomex suit in shreds so I'll see what that does. Google seems to provide some ideas but all are related to whitewashing nomex. I shall ponder this.
MightyMints is using a Nomex flight suit and i personally think that its a great idea for a start. You get a one piece flight suit, with its fire retardent capabilities. However if you buy new you're looking at around $160 for black so i personally will be dying a green one to black. I bought...
..... a nomex flight suit is probably the best possible replica of what those ODSTs are wearing. Im buying an used green one and i'll just dye it black.