While using the same extension for different themes, try to avoid the use of color values as static (hex decimal values). Instead, we can use standard variables which are defined in the theme.
Eg:
$sc-color-primary $sc-color-primary-dark
So we can use these types of variables which is defined under the theme under the module “BaseSassStyles“.
It can be used in the extension CSS files so the extension can be used for different themes.