I used to work w. one back in the late 70s at an newspaper - we'd use it to make plates w. the subscriber's addresses which would in turn be printed on the papers for bulk mailing.
Too much CSI, much of which is bunk anyway. ;-) At old institutions or other abandoned buildings you get this junk running down the walls after a while. Hell, I've dated a few guys who had walls suspiciously like these . . . It's some combination of dirt, smog, oxidation, and mold over the years mixed with condensation, which, when dripping down the walls, looks pretty tacky. You'll notice the consistency of where it starts, the width/length of the trails, etc. Blood spatters are much more individualized and depend on where the victim was popped, how hard s/he was hit, etc. My guess is that these are a nasty light yellow/gray/brown color. Also, and if these were blood spatters there would be a line where the blood was diverted by the grab bars in the showers. :-)
I had the tiniest dose of chorpromazine (Thorazine) once when I was in the hospital. I signed my self in suffering from a nervous burnout (long story), anyway I asked the nurse if there was anything that could help me sleep. She said the only thing authorized in my chart was Thorazine. "Thorazine! ," I exclaimed, "I'm exhausted, not psychotic!" She explained that Thorazine is used in very low doses for general purposes.
Let me tell you, that tiny dose knocked me right out. The next morning I had sweats. After the morning stretch and a bit of breakfast I went back to sleep. Slept like a rock until the early afternoon.
Lynne,
I wondered why O-R scrubs were colored a sort of light teal rather than white. I guessed colors such as this were indeed the complementary colors of red. Red as BLOOD. I also supposed the colors reduced glare from the lighting, but I dunno if that has anything to do with it.