I only just now realized after perhaps 15 years that the pseud0ch theme is supposed to represent a chalk board and bulletin board shanging on a brick wall. I just thought "oh, cool colors. bricks. the bricks are comfy."

Are you sure? To me it always looked a bit like a bunch of paper sheets glued to a wall, as if someone was putting up posters to advertise in some rundown back alley. Both interpretations leave the green rules section on top without a good explanation.

>>469
The green boxes are chalk boards as I said earlier, the grey boxes are the bulletin boards as you are describing

Ah, I completely forgot that green chalkboards exist. I guess the specific light shade of green was chosen based on the "web-safe color" standards of the time, since chalkboards are usually darker.
It's sort of an inside-a-school feeling then isn't it? Maybe that's a preferable mental image to us all gluing shitposts to the walls of a dirty alleyway.

>>472
In the earlier japanese sites like ayashi world or whatever the green was much darker (and the text was white, wasn't it?). The green was kept when 2ch and others came around, but was made lighter for visibility reasons. I think most people have forgotten the metaphor of the bulletin board when they visit a bbs nowadays, since "board" has become so synonymous with "forum".

>>473
Ayashii world looks exactly like a chalkboard. Thanks, I never would have made a connection between that and pseud0ch myself.
It's interesting how what were once metaphors to help people understand new technologies have resulted into the words used developing into polysemes. Someday dictionaries will have "an internet forum" under the definition for board and the original metaphor will become an obscure detail for etymologists to study, rather than common knowledge. Maybe that's already happened, considering that we're having this discussion.