Examine source code of Coffee Brown

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Coffee Brown",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(142, 86, 30)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(174, 107, 44)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(207, 142, 80)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(255, 255, 255, 0.32)",
      "popup": "rgb(174, 107, 44)",
      "popup_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(142, 86, 30)",
      "tab_loading": "rgba(255, 255, 255, 0.32)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ea7fa95e-9ca7-4b32-a3e0-72c2485bc27b}"
    }
  }
}