Customizable theme/colors #32
Description
Is your feature request related to a problem? Please describe.
gpg-tui only supports plain and colored themes and colored theme has hardcoded colors which means they cannot be changed by the user.
Describe the solution you'd like
- Make colors customizable with a configuration file
- Support creating custom themes
Describe alternatives you've considered
define colorschemes using, for example, flavours.
Additional context
See #5