found time to replace the bulbs at last! what a difference a few months make!
I removed the rear door cover, like the nissan tech explained to me. and removed the boomerang panel, it is screwed on in the inside of the door panel itself, then removed the lenses, cleaned them, and replaced the burnt bulbs wih a pair of sylvania white bulbs.
cost me $13.00 a piece, but you get what you pay for.
so thank you for all your responses, and green tea now has white license plate lights.
so we have a happy ending on that matter. and now we go on to the next situation.
check my next post for my new problem. i will post it separately.