WOCA Colour Oils are made for and work on White Oak. I can do any colour on White Oak.
Having said that, I can not stain Maple, Birch, Brazilian Cherry. I use only Natural Oil on those floors.
Red Oak floors can be stained with some very light colours, I have samples. Unfortunately darker colours like medium brown and darker do not work on Red Oak. Here is a bad example:
See that line along the wall? This is what happens. And don't tell me that my sanding is wrong. Those highly toxic stains like Bona work just fine. But I do not work with them, I have kids. What if you need to have your floor stained dark? You hire someone else.