Dimmer switch or cover for bright bedroom light?

Thanks for the replies everyone. Yes, it's LED and has about 10 diodes in a row. And, yes, it has a switch at the light. I guess I assumed too much with people understanding what I meant in saying it has no switch. I meant no switch on the wall (just curious, has anyone EVER seen a light in an RV that stays on 100% of the time with no switch anywhere?) I'm liking the window tint (or duct tape :)) idea the most at this point.