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

export default {
    variables: {
        common: {
            addon: {
                background: '{form.field.background.color}',
                borderColor: '{form.field.border.color}',
                textColor: '{form.field.placeholder.color}'
            }
        }
    }
};