And not in their architecture, it's seems to be more about the youth scene. Pilsen in Czech republic is a mostly grey boring city, but the people wear much more colorful clothes than in similar cities. The main difference I saw is more nature and a healthy pub culture.
that combined with limited luggage space meant I left my colorful clothes behind and am wearing a lot of white, black, beige. hope I don't get judged too harsh!
I don't think it was a weather thing. There was a "cold" spell here over Christmas. Probably 20 to 24C, which for us westerners is basically wear whatever you like weather. For Vietnamese it's winter time though, locals are all bundled up!
This incident was probably somewhat coincidental, but I have noticed several times previously in the cafe, with less people, it's all black, white, and grey.
Btw have a great trip! I was a western tourist too around 8 years ago and ended up never leaving. Life is good here, challenging and different.
but I have a total of 2 shorts and a bunch of boring t-shirts for 25C+ weather - simply because I rarely have incentive to expand it :)
At least it's good for jokes that I finally introduced some colors.
Perhaps in a few years you will go from Wink the Grey to Wink the White (just hope you don't need an encounter with a Balrog to accomplish it).