Ive been noticing that sometimes when I tie-dye, things will come out very faded looking and not that bright, and sometimes its intense color. I dont get it. I just dyed a whole ton of things including onesies, bibs and hats. the hats came out kind of blah in terms of color brightness (and yet still very cute) but the bibs were crazy intense color. not only that, the onesies were also intense in color. I dont get it. I'm looking at a shirt that I made for my son a couple of months ago and it is no where near as bright as the onesies I made today. I thought that the procion dye will not fade...?