Invoice Theme Colour / Design / font option#151

I think this has been suggested earlier by other user. Why no action ? Please do something. Your app soo awesome and could be more awesome with this function

Font option is important to we asia user. In asian language we also have serif and sans-serif, but different region has their practice. If there can’t be a fully font option, at least make it switch between serif and sans-serif. Thanks.

Add some themes and invoice design pz