This mod is not in active development.
Take a look at GUI Unifyer, a way more advanced similar mod.

Make Modbuttons look uniform.
For supported mods check dependencies of this mod.

Hint: "Blueprint Flip and Turn" Buttons can be moved to right by toggling them on and off in per-player mod settings.

If you are a mod programmer, please use "sprite-button" with "slot_button" style as mod-gui button and
help making this mod redundant in future.