Sorry it didn't work for you, it does however work for me, I also use breeze dark theme, I also deleted Adwaita folders
/usr/share/themes/Adwaita
/usr/share/icons/Adwaita
It does not work right away, that much I do know, 5, 6 or more reboots
I am ready to make another build and install soon, I will take note on my exact steps, I feel I am missing a step here.