SonicProjects has released a re-skinning package for OP-X PRO-3 which lets you change the interface color scheme to either blue or dark.
The "blue" skin option is the original beloved OP-X blue as requested by many.
The "dark" skin option is a dark blue-grey for people who don't like bright interfaces.
The re-skinning packages can be downloaded on the demo version site and for licensees in the login area.