I mistakenly painted the floor of my deck in a dark color, what can I

Re-paint or add a large outdoor Rug.

Do you have any paint left? Take it to the dealer and ask him to lighten it, and then do one more coat. Since it’s exactly the same paint there won’t be any adhesion problems.

Possible to just paint over it?

Prime then repaint

What product did you use? Is it holding up well? What color? I would cover it with a rug that uses the deck color as an accent color if the paint is holding up well. I’m reallly interested in what product you used and what color is too dark as I’m wanting to paint mine.

Keep in mind, if it gets a lot of sun, it may fade.

You can hide the floor under a large outdoor area rug or you can repaint in a lighter color.