This may already come with the macOS UIKit (I am not a developer) but it would be nice to have a clean look with the upcoming macOS Mojave Dark Mode UI.
Sorry, I meant to put this in the Royal TSX forum ideas.
somehow I missed your post. I've moved it to the correct forum now.
Royal TSX V4, which has been available since July as public beta offers full dark mode support on macOS Mojave.
Thanks! Downloading Mojave now