As I stated on the answer to Willie Sippel,
I liked the idea of the color picker tool to pick de alpha value of a
pixel. More specificaaly when c temporarily called using "control"
while one is using another paint tool.
The alpha value of the pixel or region picked would them set the
"opaccity" of the tool one is using in the moment.
I even suggested this as an enhancemnet at bugzilla (bug 121331).
However, people need to like the idea for it to be done.
So, what do you think? Should the color picker pick the alpha and set
the opacity of the current paint tool, or not?
Gimp-developer mailing list