Had a look at arpenteur they're mostly only in navy wool this season (and sold out in my size).
Old Town is a possibility... although I think old season Junya x Hervier is maybe more what I'm after, probably have to hunt down those.
Can't stand when retailers disable "Open in New Tab" (or Command + click) on their websites. When I browse I want to scroll through overview pages and open new tabs for stuff that looks interesting—not click one thing, then have to navigate back to the overview and click on another.
So annoying, what's the point?
Not sure if the major manufacturers do it this way, but you can overdye using the same stuff you'd regularly dye with. If the thread used is synthetic it won't take the standard dyes.