Examine source code of RTJ3

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "RTJ3",
  "theme": {
    "images": {
      "additional_backgrounds": []
    },
    "properties": {
      "additional_backgrounds_alignment": [],
      "additional_backgrounds_tiling": []
    },
    "colors": {
      "toolbar": "rgba(16, 16, 13, 0.74)",
      "toolbar_text": "rgb(250, 250, 250)",
      "frame": "rgb(10, 5, 54)",
      "tab_background_text": "rgb(190, 173, 24)",
      "toolbar_field": "rgba(250, 250, 250, 0.7)",
      "toolbar_field_text": "rgb(10, 5, 54)",
      "tab_line": "rgb(190, 173, 24)",
      "popup": "rgb(190, 173, 24)",
      "popup_text": "rgb(250, 250, 250)",
      "tab_loading": "rgb(190, 173, 24)"
    }
  }
}