There seem to be options for outdoor woodwork and options for outdoor decks but possibly not the same ones.
Fence panels and posts can have nice stains (e.g. Cuprinol) or external paints.
Wooden floors can have floor paints.
However I am not sure that floor paint is good for outside, and most of the stains are listed as fence/shed.
There is also the confusion between deck paint (for yachts) and decking paint (for garden areas).
Recommendations please for hard wearing colour treatment which you can walk on, for an outside wooden deck.
Cheers
Dave R