I want to create some plots using sage to then save them in my computer. I don't want the background to be white (or transparent). Is there a way of specifying the background of a plot inside sage?
(I'm looking for an option of the form:
sage: t=var('t')
sage: p=parametric_plot((t,2*t), (t, -5, 5))
sage: p.show(background=(.1,.2,.3))
or something like that.)
