To color a volume morph to match nearby atoms you need to color the morph model, not the end-point models. Here's an example
open 7zvw
open 14989 from emdb
open 14980 from emdb
volume level 0.6
volume morph #2,3 scale 1,0.6
color zone #4 near #1 distance 10
movie record ; volume morph #2,3 model #4 scale 1,0.6 ; wait 25 ; movie encode ~/Desktop/morph.mp4
The maps have different intensity scales so I scaled the second one down by a factor of 0.6.
If you want to morph your atomic structure at the same time from the start to end states and color zone using the morphing atomic structure then it is a bit trickier and you would use the ChimeraX perframe command to run colorzone at each frame to use the changing atom positions.
Tom