You can just give your root “Control” node a custom theme and then all children nodes will conform to its theme, unless it has its own separate style features.
To do that,
you just need to click on the root control node
click on themes then give it a new theme.
click on the new theme
under default fonts give it a dynamic font
and then style that dynamic font.
all children nodes will now inherit that dynamic font
Throw in some codes that modify that dynamic text and then all children nodes that inherit that dynamic text will also transform.