Regarding also effecting Unity 2D: The changes necessary should be easily transferable across all Unity - not just Unity 3D. This is since panel theme (font, background colour, background image/pixmap, etc) do not require 3D acceleration to run.
Regarding also effecting Unity 2D:
The changes necessary should be easily transferable across all Unity - not just Unity 3D. This is since panel theme (font, background colour, background image/pixmap, etc) do not require 3D acceleration to run.