In the photo it doesn't look as bad as you describe it.
I've been Tony the Tiger, a reverse skunk and strawberry blonde in my life. Now I only let my hairdresser color my hair. Which in fact I just did today. I'm trying to go back to the darker color and get rid of the brassiness that is caused from perms (yes, I'm old!! I still do perms) and the sun.
Can you do a darker color over it to tone down the redness, maybe?