Hello all, ok, some thoughts about the topic.
I think it would be nice to have colors with meaningful information, we currently don't have those, indeed just a grey color background doesn't transport any information, it is just an aesthetic decision, as porres stated. As it is, it doesn't make much difference if we have them or not... and as the discussion is going on here, people seem to prefer without them
I know not all here have facebook, but, so far, out of 24 votes in the 5 hours it's been on, no one really opposed. We have 15 people that actually like this and 09 that feel indifferent. Hence, I would take this as something that has more of a positive feedback as a general consensus than a negative one, at least for now.
You have a complex take on this by the way. It seems we have similar ideas that this is not a real distraction/confusion as people should be curious and copying from help files wouldn't really be a problem, but you're also taking other things into consideration and proposing yet more colors and complexity, which I think is another conflicting perspective to what was previously brought up as a problem here.
I guess that opening a github discussion about documentation ideas and issues is maybe a better place for what you're bringing, cause it's sort of a digression. Would you open it?
And also, I would like to stress that I don't call the shots and I didn't do this n the dark. I propose changes and usually people bring stuff up if they oppose it on github. Not a lot of people are there of course, but anyone who cares can join and discuss, propose stuff. For reference, here's the pd documentation project
https://github.com/pure-data/pddp
cheers