The demonination and emblem on the proof to the left were changed from blue to white. 

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On the proofs to the left the red text was changed to black on the issued stamp. 

The colors in the proof to the left are different than the issued stamps. The background on the Grenada item is issued Silver and on the Grenada Grenadines item it is issued in Gold.

The spectacular proof above has notes and samples of colors for the issued stamps. Also has notes for denomination changes.
The proof below shows the colors as noted above and the denominations have been changed.  

The proof is mounted in a folder with notes to change the green in the denomination to a darker shade. Below is the issued stamps with the change made.