Cathy Schwabe Architecture Hi--
Thanks for the compliment -- I am chuckling writing this because this was was actually not done per spec. The wood is resawn Douglas Fir and the finish is a solid color stain by Olympic called "outside white". A tannin stain blocking coat should have been applied first -- this would have prevented the dark bleed through. So -- that is how you can create this look -- don't use a tannin block and at first the wall will appear white but in time, and if memory serves, this did not take more than a few months, the tannins will naturally bleed through . If you are worried it won't happen -- i would try a sample and wait and see.
Best,
Cathy

Cathy Schwabe Architecture Hi -
The floor is scored concrete -- with an epoxy sealer. Thanks for the question.
Cathy