Hi, the worktable looks dark is just the light problem. I took most pictures in middle night and the light is really not good. And the table is coated with dark color thick oil.. so it's another reason.
The T slot is standard 10MM slot. using the M8 or silimar inch size clamping parts. the center distance between is 47mm.
No, the automatic oiler is not considered. Oiling the blocks and ballscrews manually is enough.