feature request : tabs and windows with custom styles

Submitted by j-tull

Assigned to Igor @f2404

Link to original bug (#15802)

Description

Currently all tabs and windows of xfce-terminal have the same font size, colors settings, window style. It will be convenient to be able to run instances of xfce-terminal with the possibility to custom tune these settings. I often open windows with tiny fonts to be able to display text/log files or websites with long lines without affecting the natural format of the file, but i'd also like to have windows with big fonts for comfortable reading of random things i might do.