Sorry if this has been suggested before, I have searched for it but can't find it. I suspect that because it is such a simple request that was previously done easily with a widget that it may not have come up.
It's often extremely useful to have a simple label with the following attributes:
set colour of background and font
access to the full range of CSS font size attributes (i.e, bigger/smaller etc as well as large, medium, small and so on)
css font attributes
Line size / row height
Basically the idea is to be able to fashion a nice responsive label that can be made to work regardless of grid size in a wide range of scenarios with the label contents itself set by an expression.
Previously this could be done via a very simple widget and this seems to simple to have to bother with creating and managing an extension, which is not an option to many of us in secure environments anyway.