I could.
But most people still use "background" colors and images.
I can not change my current and deprecated webmail program (Uebimiau) (it is very simple and works fine) and start using a new webmail who cant show the messages as they were sent.
I am testing and choosing the substitute, and I liked round cube very much, but if it is not capable to do it, I will need to use another one.
So I am posting the issues to know if it is possible to do it or not.
I already tried horde, ice warp and squirrel, but I would really like to use round cube.
Thank you