Adjusting Individual Parameters Using Expert Theming
If you want to change more than the Quick panel could offer, you can use expert theming to make fine-tuned adjustments to your theme.
Prerequisites
Context
Expert theming allows a finer grain of changes than Quick theming, supporting both cross UI technology parameters and UI technology specific parameters. Expert parameters may evolve over time, potentially requiring maintenance after upgrades.
to open the 



to show changed parameters only.
to switch to the tag view.