How can I adjust tool setting after using it ?

[JoeSmith543]

Hi,

 

I am using the recolour, but after using it, I realize I need to adjust the tolerance because it's not quite right.

 
Of course I could undo, eyeball a new tolerance value, use the tool again, probably not be happy with it, wash, rinse repeat

 

So I was wondering, after I've used the tool on my image, what if I could just adjust the tolerance value AFTER doing the paint operation ?

 

That way I could immediately move the slider around and fine the exact value that I need, instead of the 20-30 iterations that testing one value at a time would.

 

 

Here's the image I'm trying to change the colour off.

 

 

I very rarely do image editing, but I figured this is probably already possible and I just don't know how ?

 

I imagine it would be right clicking on the recolour action in the history windows and I thought all the tool's settings would be there, but no such luck.

 

Maybe it is in a plugin ?