Examine source code of tata_bt21

{
  "name": "tata_bt21",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "qqqqqqqqqqqqq.png"
    },
    "colors": {
      "frame": "rgba(204, 25, 25, 1)",
      "tab_background_text": "rgba(27, 48, 133, 1)",
      "toolbar": "rgba(247, 237, 94, 1)",
      "toolbar_field_text": "rgba(27, 48, 133, 1)"
    }
  }
}