First step is to remove the screw assembly, by prying open the small round cap in the trunk liner material, just at the side of the trunk opening near to the lamp assembly. Use a flat-blade screwdriver to do this.
-- when doing the RH lamp assembly, the little pull-handle for the fuel filler door is also located under the small round cap in the trunk liner material, so while unscrewing the screw assembly take care not to let that little plastic handle slip away under the trunk liner. If that happens then you will likely have to remove at least a part of the trunk liner to get it back.
That done, the inner edge of the lamp assembly will be loose from the body and the assembly will then be held to the fender by two small nubs as shown in the photos below. Pry / pull the lamp assembly carefully away from the fender.
The nubs are shown below --
and they fit into the small holes in the fender as shown below --
With the lamp assembly removed, it is simply a matter of bending two small plastic clips to allow the black bulb mounting plate to separate from the lens.
Replace the bulbs as needed and reassemble / reinstall in the reverse order to assembly / removal.
Now I noted that all 4 bulbs were GE 1057F single contact / single filament, level bayonet bulbs. The Sylvania website says that the Tail / Stop lamp bulbs are 7225, and so does most listings at AutoZone, etc. This is incorrect -- at least for my car, since the 7225 bulbs are dual contact / double filament, unequal level bayonet bulbs.
Not only that but I could not find the 1057 bulbs. The closest I got was 1156 bulbs which were identical to the 1057 except that the output is 27W instead of 21W. So far, no fuses blown.
Interesting to note that of the 4 x 1057 bulbs, only the blown one (one side) and the corresponding one on the other side had darkened glass -- all the other bulbs were perfectly clear. Seems that this brake light bulb was poorly specified for the current it sees.
Any other experiences with this rare / obsolete bulb? What do others use?