Examine source code of bren green 2

{
  "name": "bren green",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "csm_0059_A4_5bc386ea8a.jpg"
    },
    "colors": {
      "toolbar": "rgba(33, 94, 26, 1)",
      "toolbar_field": "rgba(249, 252, 249, 1)",
      "toolbar_field_text": "rgba(0, 5, 0, 1)",
      "frame": "rgba(1, 23, 3, 0.28)",
      "tab_background_text": "rgba(249, 252, 249, 1)",
      "bookmark_text": "rgba(244, 247, 244, 1)"
    }
  }
}