unix - How to determine a terminal's background color?

Question

I'd like to know if there is any way to determine a terminal's background color ?

In my case, using gnome-terminal.
It might matter, since it's entirety up to the terminal application to draw the background of its windows, which may even be something else than a plain color.

Answer 1

There's an xterm control sequence for this:

e]11;?a

(e and a are the ESC and BEL characters, respectively.)

Xterm-compatible terminals should reply with the same sequence, with the question mark replaced by an X11 color name, e.g. rgb:0000/0000/0000 for black.