primevue-mirror/components/lib/themes/primeone/presets/aura/metergroup/index.js

export default {
    variables: {
        colorScheme: {
            light: {
                meters: {
                    background: '{surface.200}'
                }
            },
            dark: {
                meters: {
                    background: '{surface.700}'
                }
            }
        }
    }
};