Answer:
I can be red blue purple and green. No one can reach me not even the queen.
The more there is the less you see.
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I run around the city but I never move.
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
I always have to work with something in my eye. What am I?