I used the bulb condoms availabe at partsxpress.com in the red variet. I did the AC control bulbs (2x) and the blubs on the circuit board under the radio controls (possibly 4 or 6x). There was no soldering involved there, just removing the green cover and slipping on the red.
The color under the radio controls is a very nice red. The color under the AC controls is less appealing, almost a blurred and faded red, bordering on a cream red due to the plastic that it shines through.
What soldering did your friend do? Replacing the bulbs on the radio board?