Visualization "types" for Theme use

[jeffwhite]

We have a theme we use for consistency across our reports. However, we have some visualizations, cards particularly, which have different uses. Rather than rely on report builders to choose the correct colors and properties settings, I'd like to build out, for example "Positive Card," "Negative Card," "Warning Card,"...essentially like CSS classes. 

Is this something that is possible in a relatively simple way? I'd like to generate these visualizations, save them in a Template file that has our theme active within it. 

Thanks.

[jeffwhite]

I'm thinking that some set of Measures built into the Template file so that the Card visualization has all of it's formula values tied to a Measure titled "Purpose." Then maybe a Field Parameter or filter value added to the visualization's filtering? I may be overcomplicating this, but it seems like I need some "declaration value" outside the field's actual value.