Also, looking more closely at the pics, I think the pics in post #2 are not the same ball as referenced in post #1. Grips and slug colors don't match, but I know that could have changed easily.
However, look at the closeup of the 2nd pic in post #2. Serial number doesn't match any of the serial numbers in post #1. Plus, shows a black pin in the middle of the bridge, again not appearing to match the Slate in post #1. It *might* match layout of the Green in post #1, but here again the engravings don't match (serial number different and Green in post #1 has the USBC, while the last pick in post #2 doesn't). Plus, in the post #2 closeup, there appears to be a plug/repair right on the edge of the "Made in USA" engraving (not seeing that in post #1 pics).
Truthfully, I think you have apples to oranges between the 2 posts with respect the pictures, but could be wrong! Super sleuthing continues! Lol.
Throwing out the pics in post#2, my opinion on the the balls in post #1 are same as what you have written: Top=Mean Greenie, Bottom=Slate Blue