Re: Coloring Dark Hair
^ That’s why, if you read the instructions of the lightening kit PROPERLY (which most people don’t 
), you’ll see that it tells you that you’re supposed to bleach the mid lengths to ends first… leave it on for desired time, then put the bleach on the roots in the last 20 minutes or so (or whatever it states in the instructions)… My friend didn’t bother reading the instructions the first time round, and she ended up with white blonde hair at the top near the roots, and orange everywhere else! 
She got it corrected at the salon… a couple of months after, she tried again, this time READING the instructions… turned out fine …she dyed her hair to her desired colour… looked great, and it was a fraction of the cost that a salon charges 
Good luck, let us know how it turns out 