Level looks OK to me. The small hole in lower left of the neck is the over flow. Did you check with the engine cold or warm? That would affect the level.
As for colour, I agree that it's not what would be expected. Normally, pink, orange, green or blue is what I'd expect (or dirty brown?).
I'd recommend a flush and refill with new. Easy and cheap job, and you then know exactly what you've got in there.