Download the plugin and configure it straight from the plugin page.
For settings that ask for color: you could put in a hexacode or word (for example: #000000 or black). The hexacode must have "#" before the number.
The fields that said optional is truly optional. Optional fields are for development and required fields are for both development and live.
Try out the demo here:
https://dragdrop-agency.bubbleapps.io/radio_buttons