Very nice map, but if you're going to color the sections differently, I might suggest that you make the responsible government provinces the same color as dominions in UCS, and keep the ones under military rule just British empire color. Might want to do something different than the white borders to show that New Mexico and California are under Texan administration, not sure what, though (british color with dominion outline?). Yes, the borders for American California Oregon and that strange one crossing the Missouri (what is that?) are off. The states themselves look pretty good, though I need to figure out when the analogue of Iowa gets statehood (probably should be before TTL's Michigan (ie Wisconsin plus UP).
I'd show a bit more of Patagonia as British at this point, and we probably ought to retcon Australia to show less clear British presence to match (still need to flesh that out, though, so don't leap to change yet).
Overall fabulous work, Plumber. You really ought to showcase it in the Map thread as well!