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 is the word that even in plain sight remains hidden?
Sing me to a baby about to go to sleep.
What happens when you throw a green stone into the Red Sea?
I am owned by the poor, the rich do not need me. If you eat me, you will die! What am I?
I flow from the Homerβs mouth when he sees doughnuts.