Another great video, as always. You asked for a Cambodian architect, which my uncle used to be briefly after being contracted to "Phnom Penh" for some warehouse builds. Blue roof's are used as they are good for reflecting heat. Not as good a white which would be the obvious choice, but white would attract more flies and bugs
Love this coverage. Fun fact about the Olympic Stadium is that it hosted the 1966 World Cup qualifiers between Australia and North Korea, playing both home and away in a neutral venue. Prince stadium is by far the best stadium in the league, but tickets are $US10 A grade and $US5 B grade, while Smart RSN is $4/$3, and most others on your list are cheaper still.
Never knew that Cambodia even had a league, maybe Smart RSN Stadium is my favourite, nice little ground. RCAF Old Stadium would be second, maybe not a great stadium but the buildings around it make it look like a nice atmosphere.