The next step would be to lightly sand one of the areas to see if the stain will sand out and apply a coat of gray oil.

Thank you for your response. My hardwood contractor is coming today to add hardwoods in my carpeted bedrooms. I'll see if he can show me what to do if it happens again in the future. Between my marble countertops and Rubio floors, I think I may stop serving non clear beverages and need to break kitty of this habit pronto!