Examine source code of Plasma Rainbow

{
  "name": "Plasma Rainbow",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "om14.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 0)",
      "tab_background_text": "rgba(135, 13, 13, 1)",
      "toolbar": "rgba(22, 13, 128, 0.47)",
      "bookmark_text": "rgba(57, 209, 11, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(0, 187, 204, 1)"
    }
  }
}