Hi David,
Glad you liked the work. Mistermonday, Murray, does outstanding work. I do this only as a hobby. Strongly advise you go with his suggestions. But to answer your question, I use
PS CS3. Using the quick selection tool I isolated the area you wanted to match and then inverted the selection. Used levels, Hue/Sat, Selective color and a little healing brush tool to try and restore the large color area.
dc