Your predicament sounds alot like when my brother's girlfriend was trying to do 4 different colors in my hair.
She tried to do MP-Midnight Blue on my front-left portion, Sp. FX - Iguana Green on my front-right, MP-Flaming on my back-left, and Sp. FX-Bright as **** Yellow on my back-right.
All the colors bled together.......nothing made any sense in my hair. My hair was still pretty well from the last bleach, so we just bleached out all the color, and re-dyed it all MP-Purple Haze.....
So.....yeah. If it's really that bad, and your hair's healthy enough, just bleach your entire head and dye it uniformly.....
Lonliness isn't being alone. It's when someone loves you, and you don't have it in you to love them back.....