Here is the way how you can change the color of the status bar. This can be done for each server or for each window.
For Each Server:
Click on “Connect” on select “Database Engine”
Click on Options
And click on the check box “Use Custom Color:” and press “Select”
Now Click “OK” and then “Connect”.
Now right click on the server and choose “New Query” and notice the Status bar of the New Query Window, it will show the Color you choose in the previous step.
For Each Window:
Click on “File”, expand “New” and choose “Database Engine Query” and follow the same steps as above.