Sliders, color pickers, dropdowns, etc., in Dashboard 2.0 Templates

You should check the docs. Like the one above, color picker doesn't have an event change: https://vuetifyjs.com/en/api/v-color-picker/

Alternatively, bind the value to a data property and use a watch. Similar topic here: Dashboard 2 - VUE <v-color-picker> - #2 by Steve-Mcl