Seems I have two Macintosh PowerBook 180s: one has a dead colour screen but seems to boot fine, and the other (the one screenshotted above; yay ⌘+Shift+3 and enough room on the boot floppy …) has a lovely greyscale screen but a dead hard drive. I suspect we’re going to have to do a head transplant.
And no, I’m not having ¼-century 68030+68882 wish fulfillment one bit …
It works great, btw. The grey screen starts to fade and tunnel a bit after a few hours, but it’s otherwise good.