I would like to read the
Custom Theme/Branding Settings opened up in Spring 18 release.
The objective is to be able to read or access the background color and background image used in the theme/branding, so that I can use the same effect in a VF page, which is not a lightning component.
This is necessary because, the iframes created for Visualforce pages has forced White background, so the theme branding background could not be seen with us re-creating the theme in VF page css.
Any way to do that? (Not looking to create a Lightning Component for the VF page replacement)