Good morning! Thank you for checking out Color Swap and for the kind words :)
Oh I think I see what you mean when trying to use a selection of colors and setting it to the A column. I had disabled the A /all buton when the export options are disabled to prevent confusion because it would swap A to B and then proceed to C and so on which would not have the orignal colors (effectively doing extra work with no output). Though it seems I over looked the setting of the colors on the A(all) column by disabling that button!
I'll look in to patching that up and making so the all could be set when using the set colors functionality. In the meantime a quick work around is to check the enable export check box and it will let you click on the all column to set colors like the others (when set colors from selection is enabled ofcourse)
Also i will look in to adding a selection of frames or cels to the list as well. If you're able to get to it before I am would you be able to fill in a feature request on the issues page so I can keep track and discuss more there?
https://github.com/CarbsCode/CarbsAsepriteExtensions/issues
Likewise a bug report for the for mentioned issue as well! Would be very helpful to keep track of things and discuss any progress on them 😀
Thank you again for checking out my tools!
Much love and happy pixeling!