[Gimp-developer] Cropping border color

[Brad Gibson <bradgibson999 yahoo com>]

It would be great if I could choose to see pure black around whatever I'm cropping, because I make very 
meticulous crops of photos for artistic purposes, and I often have to crop and go back multiple times because 
it looks different in the final version with solid white/gray/black compared to transparent while I'm 
cropping. Or else, if it's easier, make it so that I can undo the finalization of the crop but go back to 
where I left the crop at. Thanks.Brad G.