(Feature request): Ability for child element to opt out of theme

[alexcameron7]

Thanks for the great library, has made styling a breeze.

Is your feature request related to a problem? Please describe.
When applying a theme sometimes I don't want a child element to inherit the styles of that theme.

Describe the solution you'd like
I would like the ability for a child element to opt out of a theme.

Describe alternatives you've considered
Override the styles from the theme.

Additional context
Add any other context or screenshots about the feature request here.