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.
I am an insect. Half of my name is another insect. I am similar to the name of a famous band. What am I?
I'm an animal. I love marching. I always wear a tuxedo. What am I?
I am a little piece of paper, yet sometimes hold lots of value. I am all you need to get into big events, but will cost you. I am an important part of travel. And if lost, you're not coming. What am I?
What goes through towns and over hills but never moves?
No matter how little or how much you use me, you change me every month.