High lift blonde hair color. Quick fix or do over?

My natural color hair is medium blonde. I've been highlighting using bleach and toner for years. Have never dyed my hair. Last week instead of doing a touch-up I decided to try a high-lift blonde to just brighten my hair. I didn't exactly follow the instructions. Since I didn't want to lighten just brighten, I decided to try a 30 volume developer instead of 40. The color is not bad, but there's a slight coppery orange cast to my hair. I know you can't tone hair that's been dyed, but is there something similar I can do that will fix this? I was also wondering if maybe I should put some darker ash blonde in my hair and just make new highlights from scratch. Then I thought should I just go buy 40 volume developer and try the high lift again. If someone could help me out with what the best and least damaging answer is, I would really appreciate it.