The red wood is a recolor of wood from the original visual texture pack. I'm not sure where they go it from. As it's very well seamed and people where not that good in making seams back then.
So do the textures have any names/prefixes that might give a clue as to which mod they are from? I thought I had a ton of graphics replacers but can't recognise those ones - at least not without the meshes attached - though the red wood looks oddly familiar
Unfortunately no, for every mod I work on with other's textures, I completely rename the stuff to CS_something, so all textures have my own names.
Yeah, the red wood makes me crazy, I'm sure I saw it somewhere, but just can't figure out where.....
As for the floor on the other hand, I'm absolutely clueless. Other then it's use in my mod, I don't remember I've seen it anywhere else.