Update on Unnecessary RB1 LED mod:
The previous 5mm LEDs were too big and too bright, so I ordered 3mm white LEDs. These are the same exact size as the original bulbs, so my mistake on the 5mm... These were also a little 'bluer' and matched the dash LEDs better. However, they still were mega-bright. The light pipe in the RB1 just wasn't made for these very bright LEDs. They create hotspots under certain keys.
So... I ended putting the little blue covers back on the white LEDs to reduce the brightness. Now they are blue. With the old yellowish bulbs, these turn green, which I can't stand. Anyway, it matches the blue HVAC controls perfectly, so that's a plus. Even with the covers, I had to apply tiny bits of blue electrical tape on the tips of 5 LEDs to make them even dimmer to match the others (then I put the blue cover back over the tape).
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Again, this is due to the light piping inside, making things uneven. So after about 20 disassemblies, I think I have all the controls lit up evenly. I also had to move resistors a few times since they were interfering with the cover plate. What a pain. But I was in it too deep to go back.
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So what is the lesson here? That I have too much time on my hands? That I should think things through first? I should weigh the pros and cons?
Well I am quite sure I have the first and last blue RB1.