This is the owner of the house above again: You would have to get the floors stripped and sanded to start again with a new color. This has to be a professional floor sanding company. Get a few extra planks to match your color if possible and stain test them with a few diferent percentages of the minwax mix, or color test an area on the floor with the minwax stain mxiture. Look at it for a few days before going ahead with a color. You might need to add a higher percentage slightly of ebony to achieve the same look as white oak to counter the red color of red oak. Bu you don't want it too red or too muddy either! My floor guy said a great idea is wetting the floors before to get the color to pop. I would only do this if you have quarter sawn oak. That means that you don't see the swirls of the grain like regular oak that has all the grain swirls. We chose quarter sawn, and I wouldn't wet the floors to pop the color before staining if you don't have quarter sawn because the grain would come out even more pronounced. (Most homes do not come with quarter sawn, so no big deal if this isn't what you have.) I highly suggest using the oil based Absco prouduct- Satin. What you finish the floor with is very important. Google Absco to see it. Whatever you do, do not use a water based polyurethane or the floors will have a plastic fake look to them. The absco product is good and affordable too. Good luck!