Roman,

Wonderful. This is what I have been trying to achieve. I cannot tell you how much I appreciate you helping me out. I have seen in other posts where you said to work in each of the color spaces and here I can see the results of that approach.

Now my challenge is to see if I can do something similarly. Whenever I try to work in the different channels I get bizarre results. I am going to look for a related tutorial - do you know of any good tutorials on the approach you used?

Thanks again - your willingness to help out and teach is really appreciated.

Dave