I can set the color scheme of the initial tab in Qt Console by using the following command line:
ipython qtconsole --colors=linux
But each subsequent tab I open (Ctrl + T) in Qt Console defaults back to a white background and dark text. Is there any way to change the color scheme of new tabs too?
This is a bug in 0.12, and has been fixed in master. So the only way to get what you want is to update to master, or wait for 0.13 (soonish).