Regarding Sandboxes, why do numbers sometimes appear in blue or green?

A.
Green is for values not sent to the server and blue is for uncommitted values.

B.
Green is for uncommitted values and blue is for values not sent to the server.

C.
Green and blue are for uncommitted values depending on client interface used.

D.
Green and blue are for values not sent to the server depending on the client interface used.

Explanation: