Swiss traditionalists like wearing light blue, edelweiss-striped men's shirts.

Pal, you call people in Switzerland who speak German "Swiss people who speak German."

The term German Switzerland (also German Switzerland) is one the cantonal borders border area of Switzerland with a predominantly German or Swiss German ( schweizerdt. Schwyzerdütsch, Schwyzertütsch and similar) speaking population ("Swiss German").

(Wiki)

Swiss people living roughly West of the 2 lines drawn between Basle and Fribourg and between Fribourg and Zermatt speak French.
Swiss people roughly South of the 2 lines drawn between Nufenen Pass and Spluegen Pass and between Spluegen Pass and Bernina Pass speak Italian.
Swiss people in many mountain valles of Canton Grischun/Graubuenden speak Romantsch.
All others speak almemanic dialects of the German language which German people usually don't understand. These dialects are called Schwitzerduetsch/Swiss German.

On trains crossing between French and Germanic parts of Switzerland I now watch the wood piles by houses to see which part I am in if not clear on the actual border.

But I notice on the Germanic side wood piles are cut right to the same size - the ends of the piles being perfectly straight

but you know when you enter the French-speaking part when the ends of the wood piles become haphazardly with logs haphazardly cut - I like the Francophones approach to wood cutting much more than the more meticulously cut Germanic piles - and yes this reinforces stereotypes about each culture.

It might be difficult to find enough wood piles on a train ride from Basel via Neuchâtel to Murten:
First 30 min Swiss German speaking area, next 20 min French speaking, then: 10 min tunnel, 5 min Swiss German, 10 min bilingual, 5 min Swiss German, 20 min French, 5 min Swiss German, 5 min French, 5 min Swiss German, 5 min bilingual.

Wow! Yes that would be hard on such a short trip!