If you throw a red stone into the blue sea what it will become

It will Wet or Sink as simple as that

an orange stone.

Hopefully in time it will become a coral reef with many colors, support life, provide homes for sealife, and also provide eye candy for S.C.U.B.A. divers.

"You can take the blue pill or you can take the red pill. The choice is up to you."

Encrusted with ocean life at the bottom of the sea?

another stone on the bottom of the sea