[Python] Select color of matplotlibs RectangleSelector via rcParams

I have developed a Python application () with a pyQt GUI and embedded matplotlib canvases. There is a dark and a light theme where the colors are selected via QSS and rcParams for the matplotlib part. However, the rectangularSelector is invisible in the dark theme (black on black) - does anybody know how to select its color via rcParams?

Using @AK_S answer below, I'd like to read the settings from a dict, e.g.:

mpl_rc = {
'toggle_selector.RS' : {'drawtype': 'box',
'recttype':dict(
facecolor='green', edgecolor = 'black', alpha=0.2, fill=True)}
}


However, I get the error message: 'toggle_selector.RS' is not a valid rc parameter when doing

from matplotlib import rcParams
for key in mpl_rc:
rcParams[key] = mpl_rc[key]

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