I took the apks (the latest updates) and added the moonshine icons for these 3 apks.
I will do the rest if someone can link the Google play music apk and the Google Photos apk
check the shared folder, download the apks
place all of them in system/apps
go into data/apps and delete the gmail and calendar apks
See attachment for screenshot
Download here: https://drive.google.com/folderview?...nc&usp=sharing
credits: http://www.tha-icon.com/ for the images