Revlon Colorsilk Luminista Light Golden Brown, getting roots to match lightened hair

In my last hair experiment, I put pure 40 volume l'oreal developer bleach on it. (Don't do it) I liked the color at first, but then it turned brassy with black roots.

BEFORE GROSS-NESS:

NEW FORMULA:

1.) L'oreal HiColor highlights Ash Blonde + L'oreal 40 volume developer on roots 20 minutes. 

2.) Brush out and leave for 5 more minutes:

3.) Add Born Blond toner to conditioner, rinse. Color will be darker because of toner.

AFTER:

The dark brown color from the toner faded after a week or so of shampooing.

AFTER FADING:

This is what it looked like under yellow, bathroom light. It has more of a red tone but my roots are still visible:

Because my roots still had a visible band from the new hair vs. dark hair, I applied Revlon Colorsilk Luminista in 170 Light Golden Brown all over. I did this about a week later:

It is finally even throughout and the right "J. Lo" color I wanted.

FINAL COLOR:

FYI : I fried the crap out of my hair, so be careful. I love the color though, so I don't mind.