Almost There...
And this was the result... I thought it was done. For a while...
Weeks later, I decided to try blending another half-second exposure into the highlights. More importantly, got really annoyed with the puce in the construction to the right.
Monkeyed with its tone a bit, but ultimately left that alone for tweaking only the hue instead, an advantage of having built the tone and color separately. So the next slide wraps up these loose ends.