Well you cant really judge people just by sound bites on a forum.
Read my post after that and you might slightly get the jist of what i am on about, I dont expect many people to agree with me...........
I question why for decades and decades this was never required
You might as well question why for decades and decades universal toilets weren't required/ step free footbridges weren't required/ wheelchair accessible buses weren't required...
...you're essentially asking why we bother trying to improve something and make it more accessible?
Enthusiasts... they talk about how vitally important heavy rail is as a public service, yet woe betide anyone whose requirements mean making small adjustments to access it!
If you are worrying that your pwetty livery is "suffering" because of contrasting doors then there's probably little point trying to understand the situation from people with greater needs than you.
It's not a black/white issue. Not everyone needs a wheelchair, but a lot of people need a little assistance.
(and even if we ignore those with imperfect eyesight for a moment... consider the need to speed up platform dwell times... we seem to spend tens of millions of pounds on tinkering with junctions/ alignments to save two minutes from a journey... so something that makes doors more obvious as a train pulls into a station could be the difference between passengers neatly congregating around the doors and passengers not knowing where to stand at the platform... if it makes things faster then surely it's A Good Thing?)