I've got the Italian signal lights that are clear upfront, amber in the rear sides. I first considered doing the mod I've seen mentioned on here related to drilling out the rivets and swapping the brackets, but at least for me, that didn't look like it would work. A) because I don't have anything to reinstall hollow-center rivets (the screws to attach the lens assy to the car goes through there) and I didn't want to try to go without rivets and have just the screws holding it together, but more significantly the bracket assemblies won't easily swap! - my '76 02 'bulged' signal assembly brackets and reflectors protrude past where the lens face is on the flat lights. So my conclusion is if anyone's done this bracket swap they did it between flat US and flat Euro/Italian set-ups, or they had to bend the US bracket and heavily modify the reflector to make it work.
I considered the tap-a-lites, but one of the things I really wanted to do was run white running lights inside the clear lenses. (Silver-coated yellow bulbs for the turn signals, but white bulbs for running lights). The tap-a-lites only came in yellow bulbs. And I didn't want to always have to buy tap-a-lites for bulb replacements.
So my solution was to do something similar to Earl's idea. The difference for me was the part I used for the 2nd bulb. I went with a wide-dispersion super-white LED light (in a nice chrome carrier), which I had to drill one hole in the bracket to fit. (I've been replacing most of the lights on my 02 with LEDs - brighter lights, less wattage, longer wear.) I ended up with a pretty nice clean assembly, and the white running lights gives my 02 a distinct look.