Well.....not exactly, but my stain trays are filled with empress paste, emax paste and the Artistain universal stains. All mixed with the Univeral glaze medium Of the Artistain Pentron Kit.
Have never had issues crossing into any of them. Sooo I would think you could adjust your pastes with some stain. I actually like the empress pastes better than the emax shades.
I also have the new Ivocolor starter kit but so far am not a fan .