Snake Mites are generally black but as stated go through different life stages. If you don't see any black ones at all I wouldn't say there snake mites. Could be rat mites or wood mites depending on your substrate.
Treatment for snake mites would kill other types of mites also. Provent a mite for use in enclosure and natural chemistry reptile spray for on your snake. Provent a mite is to be used in enclosure with the snake and water source removed, do not place snake or any water source back in until the cage has ventilated for at least 30 minutes. For natural chemistry reptile spray I just spray onto a paper towel and let the snake slither through a few times, it does dehydrate the mites so after you let you snake sit for 15 minutes soak your snake in tub of water for 10 minutes and make sure the water isn't to hot or to cold. Follow the instructions exactly and repeat once a week for a couple months.
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