ArcoLinux has a package called arcolinux-arc-themes-git. It provides 42 Arc themes not with the blue accent color but with a different accent color.
These themes have been created with a script named Arc-Theme-Colora hosted at https://github.com/erikdubois/Arc-Theme-Colora. We build upon the work of Horst3180 at https://github.com/horst3180.
Goal of script is
- change blue accent into one of the 16 million colors
- distro independent
- easy to edit and change the scripts
- follow the workflow from Horst3180
- cutting-edge up-to-date - straight from the github
Arc is a flat theme with transparent elements for GTK 3, GTK 2 and Gnome-Shell which supports GTK 3 and GTK 2 based desktop environments like Gnome, Unity, Budgie, Pantheon, XFCE, Mate, etc.
The script makes Arc Theme compatible with Openbox too.