Customize Default Settings

Is it possible to create an enterprise wide set of settings so that everyone's visualizations have a consistent look and feel.

I have already created a JSON file to load the corproate color schemes.

But, can I set a bunch of format (paintbrush) defaults for things like  the font size and font type in the Row Headers?  Right now, everything defaults to Segoe UI, in 8 pt black. I'd like to do things like change the default font, set the Row and Column Headers to be a little larger than the Grid Text settings. I'd like to default the Border to On and in a certain color.

Those settings are all somewhere in PBI, can they be accessed and edited?