Simply wait until a substantial amount of local mud has been donated to the floor. Important: wait for it to dry. Then get out your palette and carefully match the colour. At my house, the tone would combine burnt umber with some titanium white. In Oakville with its red earth, however, burnt sienna would be the "earth colour" (get it?) of choice. You Winnipegers are intimately familiar with the colour "Gumbo." Paint a swatch and march to the carpet store, congratulating yourself on yet one more hour per week wrested back from the cleaning abyss.
(Please note that there is no accompanying painting for this post. It turns out that I don't do floors.)
You're welcome.