Reference specific elements in PowerBI Theme

Is it possible in the JSON file to reference specific elements that will appear in your reports to hard code them to a specific hex-code color?  For example, I want all instances of "Canada" in a report to appear as a specific shade of blue.  

Even with a custom template, PowerBI fills in the rest of the template with its own colors and doesn't label the colors which makes it difficult to select the same colors every time.  

Thanks.