Answer:
makeup for finger tips
I am always coming but I never arrive. What am I?
When it comes to me, you go on red and stop on green. What am I?
I am expelled from you orally with a sound
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.