'Appearance Styles'

Hello, 

I’m wondering if anyone has been able to create ‘Appearance styles’. I’m creating a site that has a range of opacity settings on images as a design system. 

I’m wanting to have ‘Appearance styles’ similar to ‘Colour Styles’ or ‘Type Styles’ so I can easily adjust these across the different images & have a clear system for development. 

Has anyone been able to do this?