I am also getting affected by this.
In the past, I was burned by a separate issue where a Report would have certain colors in PBI Desktop and then when I published on online, only on some random days, the report would have different colors.
Now I am experiencing this similar, but even more annoying issue. First image shows colors of Dashboard in the PBI Service.
Second snapshots shows what the colors look like when users receive an Email Subscription. Clown shoes. The colors changes are ridiculous.
Anyone else still experiencing this? I'm very surprised there are not more people reporting this.
I am using Outlook 2016. Does this have anything to do with the issue?