Incidentally, as far as the blue black storm goes, I have had more trouble with the Garnier 100% Color (though I love how it looks) blue black than any of the blacks I have tried (and I've pretty much tried them all). Usually, after the first wash or two the dye bleeding goes away, but the 100% seems to go on forever, including bleeding onto my pillowcase if I sweat while I sleep. At first I thought I was doing something wrong, but every other brand stopped bleeding after the first wash or so. Right now I'm actually really enjoying the Nice and Easy blue black.
The best blue black I ever had, I got done at a salon. Since my hair is already pretty dark, and I've been dyeing it black for a very long time, the stylist mixed the dye so that it was some black and mostly blue dye. In artificial light, it just looked like a very deep black, but in the sun the blueness was awesome. I wish I could afford to get that done every time I need to dye my hair (and because I am on the Trent Reznor hair dyeing plan, I have to color every six weeks or so, and I can't really drop $100 every time, hehe).
Okay, that was a ramble. I'll stop now.