I saw that sonic and I will probably hit you up on the details for the countertops some day. I really want those
It is, according to my research, possible to acid stain old concrete so long as you clean it thoroughly. Now naysayers talk the 'it will be really cold in winter' bit but I can live with that if it turns out to be true. I love the look and the maintainability of it and the cost to convert is relatively inexpensive.
I am NOT looking forward to the labor of removing the lino from the kitchen or bathroom but.. such is life.