What I struggle with the most when making a theme, and thus a screenshot, is to find apps that will show the effects of most of the settings possible.
Maybe the idea there would be to have a companion app doing nothing but being a GUI abberation exposing most settings effects on Haiku and if possible also on Qt apps. It could be used with Appearance app when creating a theme and with Theme Manager if user decides it. Then you could have a box asking user wether to include it on the screenshot or not.
What I struggle with the most when making a theme, and thus a screenshot, is to find apps that will show the effects of most of the settings possible. Maybe the idea there would be to have a companion app doing nothing but being a GUI abberation exposing most settings effects on Haiku and if possible also on Qt apps. It could be used with Appearance app when creating a theme and with Theme Manager if user decides it. Then you could have a box asking user wether to include it on the screenshot or not.