[Gambas-bugtracker] Bug #2247: Dark theme issues

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.2247&from=L21haW4-

Comment #4 by Benoît MINISINI:

As soon as you don't use the default backgrounds and foregrounds, or the color constants, you have to manually adapt your colors to the dark theme.

You can use the Color.Invert() method, that can invert a color so that it fits a dark theme (with its second argument set to TRUE). The result is not perfect, but still acceptable.