I responded to you on Thundaga's Discord, but I'll share it here again.
In PokeBattle_Scene_Menu, right before this line
moveNameBase = Color.new(248,248,248)
You can try it and tell us if it does.
v17+ does imply support for v17 and above. And I assume it should work without any issues on v17 because nothing much in the HM and Overworld department has changed.