After stripping the paint on the frame, then treating it to a muriatic acid, and spritzing it with a water and salt solution, Ratty's frame is starting to take "shape." Some interesting patterns and colors are appearing. In fact, it got the point to where I didn't want any more patina, as it was looking just right.
Overall frame shot, showing rusty patina:
Different patterns and colors showing:
After a couple coats of clearcoat:
Detail of the downtube, showing great color, also cleared over: