To stain the desk I mixed a combination of 1 part aged oak gel stain, 1 part cherry gel stain, 1/4 part of gunstock, and 1/4 part of golden oak. Experimenting with custom colors of wood stain is my favorite. As long as they’re all the same base you can combine the colors with no issues. At least in my experience I’ve never had an issue. If for instance one is waterbased and the other is oil based you would have a problem. They wouldn’t mix. After applying the stain onto my desk I letting it dry overnight. I was ready to seal the next day.