What is needed is a border option, and a border colour option. This would function like the margin, but exist between the margin edge and the frame, and allow a specific background colour to be set. This would allow emulation of retro home computer styles, such as C64 and ZX Spectrum, where there is a border around the text area that is not always the same colour as the main text area background:

What is needed is a border option, and a border colour option. This would function like the margin, but exist between the margin edge and the frame, and allow a specific background colour to be set. This would allow emulation of retro home computer styles, such as C64 and ZX Spectrum, where there is a border around the text area that is not always the same colour as the main text area background: