DONT WASTE YOUR WEED ON FOOD COLORING. The post your talking about was recently brought back up, and the dude that tried it was our RIU buddy, FDD2BLK. He tried it, and even though it looked awesome, it burned disgusting and black, and it tasted like complete asshole. Dont do it, unless you wanna waste a perfectly good nug. Guys, the majority of us are growing dank anyways, and if your buyin your own seeds, and one of your concerns are the color or bag appeal of it, then buy a strain with blue or purp phenotypes, and grow that shit out to specs so it changes the proper color for you (ie, dropping the temps in the last couple weeks of flowering makes your purps turn purple, blues turn blue, ect..). Its not worth doin that shit. Unless your growin schwag, and you wanna do that to fool people into buyin your shit n thinkin its danky. Which is bad business in my opinion.