Roller Blind, Black out. Can spray paint Graffiti name. I've tried it before but found only a white on and had to paint it black. This caused it to be heavy to roll back up, maybe this one will work out better since it is already black.
Honeycomb White Cell Blackout Cordless Cellular Shades by Arlo Blinds
Keep your room completely dark with these white cellular blackout shades. The innovative honeycomb shell design also seals your windows to better regulate room temperature, and the optional outside installation makes these cordless shades convenient.