It was used both ways. Blue goggles/amber screens in Europe and the other way round in the tropics.
https://www.flightglobal.com/pdfarch...0-%200611.html
In 1989 General Noriega was overthrown by the USA and his personal Super Puma became redundant. It ended up on the North Sea and it was noticeable because all the windows were tinted blue presumable because of the sunshine in Panama.
On the passenger brief we would advise them that if they found any packets of white powder lying about they were to pass them up to the pilots.