That's a good color!
Not sure what peroxide (an oxidizer) does chemically, but that is a brown with punch.
Ammonia fuming red oak (no other treatments) typically will produce a greenish tint which I don't really care for.
It would be interesting to see if and how much that color shifts with different color boards and even sap wood. See if it is based on tannin or the acetate turning to rust (iron oxide).