I have the smittybilt gear seat covers from qtec first ordered them in tan came in green, but I had them on long enough to know I love them. There is a place for everything. They are canvas so they are water-resistant. This weekend I am going to take them off and wax the fabric underneath. I've been looking online and will be using a mixture of paraffin wax and bees wax. I think if I use black paraffin wax it will make my green seats match my new black covers.
I was looking at the same thing. They have another universal cover with out headrests in it. When I put the drivers one on it was easy. I may need to take the seat off the slider and reinstall and see if it changes the out look. I will try and take a pic tomorrow and post that