ArchMerge has a package called archmerge-arc-themes-git. It provides 45 Arc themes not with the blue accent color but with a different accent color.
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.