https://ezfycode.com/blog/dawn-theme-how-to-customize-badges-color-and-size

settings_schema.json

,
  {
    "name": "Badge colors & font size",
    "settings": [
      {
        "type": "header",
        "content": "Custom badge colors by ezfycode.com"
      },
      {
        "type": "checkbox",
        "id": "enable_ezfy_badges_color",
        "label": "Enable",
        "default": true
      },
      {
        "type": "header",
        "content": "Product page"
      },
      {
        "type": "color",
        "id": "sales_badge_background_color",
        "label": "Sales badge background",
        "default": "#334fb4"
      },
      {
        "type": "color",
        "id": "sales_badge_text_color",
        "label": "Sales badge text",
        "default": "#ffffff"
      },
      {
        "type": "range",
        "id": "sales_badge_text_size_desktop",
        "label": "Sales badge text size (desktop)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "range",
        "id": "sales_badge_text_size_mobile",
        "label": "Sales badge text size (mobile)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "color",
        "id": "sold_out_badge_background_color",
        "label": "Sold out badge background color",
        "default": "#242833"
      },
      {
        "type": "color",
        "id": "sold_out_badge_text_color",
        "label": "Sold out badge text color",
        "default": "#ffffff"
      },
      {
        "type": "range",
        "id": "sold_out_text_size_desktop",
        "label": "Sold out text size (desktop)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "range",
        "id": "sold_out_badge_text_size_mobile",
        "label": "Sold out badge text size (mobile)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "header",
        "content": "All pages"
      },
      {
        "type": "color",
        "id": "sales_badge_background_color_all_pages",
        "label": "Sales badge background color (all pages)",
        "default": "#334fb4"
      },
      {
        "type": "color",
        "id": "sales_badge_text_color_all_pages",
        "label": "Sales badge text color (all pages)",
        "default": "#ffffff"
      },
      {
        "type": "range",
        "id": "sales_badge_text_size_desktop_all_pages",
        "label": "Sales badge text size (desktop) (all pages)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "range",
        "id": "sales_badge_text_size_mobile_all_pages",
        "label": "Sales badge text size (mobile) (all pages)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "color",
        "id": "sold_out_badge_background_color_all_pages",
        "label": "Sold out badge background color (all pages)",
        "default": "#242833"
      },
      {
        "type": "color",
        "id": "sold_out_badge_text_color_all_pages",
        "label": "Sold out badge text color (all pages)",
        "default": "#ffffff"
      },
      {
        "type": "range",
        "id": "sold_out_text_size_desktop_all_pages",
        "label": "Sold out text size (desktop) (all pages)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      },
      {
        "type": "range",
        "id": "sold_out_badge_text_size_mobile_all_pages",
        "label": "Sold out badge text size (mobile) (all pages)",
        "min": 10,
        "max": 40,
        "step": 1,
        "unit": "px",
        "default": 12
      }
    ]
  }