Your colours looks pretty much like my preferred GUI-settings. Fresh and easy on the eyes.
Just FYI: The most recent maintenance update 10.2.20 doesn’t address the issue that’s been apparent since almosta year now.
A year has passed. New machine (i9 with 18 cores), new OS (Win 10), new Nuendo-version (11.0.10) - old bug. :-/ … Nuendo still doesn’t recall previously saved (and manually recallable!) custom color preferences for its GUI.