pablohoney - nice rack.
Regarding color, Maple does darken with time. Exposure to UV is the key. There are UV lamps. Sunlight has tons more than any bulb. Good work.
We're in the same place with 7.2s. I bought a pair awhile back, but haven't fired it up yet (lots of reasons). I did hear a pair at Rob's a few years ago. Extremely good. Also, the company line is that Jim considered the 3.7 to be 'better' and therefore discontinued the 7.2, etc. In fact the 3.7 breaks new ground and is the statement of his art. However, the 7.2 is not a lesser speaker. Those speakers were phased out to simplify the operation to give it some chance of surviving his death. I'll be interested in hearing your comparison between your 3.6 and 7.2 when that happens.