Reddish glow mostly in natural after coloring

Didn't Claude's sticky say a blue based ash  will cancel out the greenish cast you get when trying to lose the oranges tones or something like that.....?! That a little blue mixed in will give it a nice cool base is what I think he said....

I am a 46 y/o male and I have not been getting much info after posting in the men's forum so I thought I would try here.
The hair on my temples is graying a lot more than the rest which is medium brown.
To maintain a more uniform and younger look I have tried the men's
colors you can find easily: Just for Men, Grecian Formula, etc...
I only apply the color to the temple areas and blend in the edges.
They all make my temple hair turn greenish/yellowish in a few short days
(2 to 4).
With the help of a friend I have gotten a professional product:
Redken For Men Color Camo
I use in a shade of medium ash, after experimenting with other shades.
This seems to be the best solution so far, but my hair still has this dark
reddish tone, especially in sunlight... only on the temples again which is the only colored area
Is there another product that you recommend? Or is there a different
approach?
Thanks for your help.