yup, all you have to do is make sure your Pram battery is charged.

Once you boot 7.5 and your db15 to vga adaptor is set to VGA.  The screen will return to normal.

and the change will be automatically saved in pram.

if your pram battery is dead and you boot 7.1 or lower.  It will stay greenish, until you boot back into 7.5 and it will return

to normal.