Answer:
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
What has a head and a tail but no body?
I spend the day at the window go to the table for meals and hide at night.
I am a kind of coat that can only be put on when wet. What am I?
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.