But if you insist on doing it, try reading some of the other posts on the forum. Press Ctrl-F, then paint, or wood floor and among the results you should find several responses.
A painted wood floor is a maintenance nightmare, and I believe you will regret doing it. Just my opinion. "Painted wood floor guy" will say something different just to be difficult.
Good luck, and consider all the other possiblities, like sanding and refinishing with a lighter stain....
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