Off Topic:
They wan't you to turn off the lights because they want to hide their belly or some wrinkles on their ass or any other "insert made up shit here" they feel bad about.
If they keep the light on however they rly wanna just show off like "Yeah look at my amazing body, You like that huh?"
The only way you can find out if you are really ugly is when they shove you out the door before the sun goes up. Because she can not be seen with you. I call this "the Vampire" because if the sun ever gets you this women is gone.
But to give a brother advice on the dating game. Stop being nice to them and treat them like a dude. Make jokes about them "especially their insecurities" and make em laugh. You won't be able to save yourself with all that flaps flying around your face. You have been warned.
On Topic:
naughtyroad Just occured to me. Maybe the entire problem is from people using their phones and not adjusting the brightness of their screen?
Didn't test this myself but i assume on a phone you already have a hard time even seeing everything because of the text box or can you turn that off as well on mobile devices?