I just noticed that the mutt ebuild prints the following message if the slang USE flag is set: "If you want a transparent background, please merge mutt with USE=-slang." Out of curiosity, I decided to try it to see what happens, but it works fine here. Am I correct that by transparent, it means what ncurses calls default colours? default_colors(3x) eg, http://dev.gentoo.org/~taviso/slang.png I just set the colour of the object I wanted to be transparent to "default", for example: color error brightred default color status yellow blue color tree magenta default etc.
Please contribute to bug 57416 instead, thanks *** This bug has been marked as a duplicate of 57416 ***