You've posted 3 times in 5 min. This is not a 24/7 tech help site. (We also have a no bumping rule which is why I'm telling you this.) STOP bumping your post. Breathe. Wait. It's the only way.
Some phones have an auto setting as well as a brightness slider. Make sure your auto setting is off. Then slide the slider down to dimmer. Better? You should also be able to adjust the colors, at least with most phones. Try telling us the model of your ZTE and what version of droid it's running for more detailed help.