That's one of the reasons I color code my instances' query windows in SSMS (green for Dev, yellow for Test, orange for QC, and red for Production). The colors help me remember what environment I'm currently connected to. Also, I stop before I hit any okay buttons and verify everything in the windows to make sure I'm pointing to the correct instance.

How to do the color code on the instance. can you please provide the steps on SSMS how to do.