Examine source code of Tab Contrast - Wood

{
  "name": "Tab Contrast - Wood",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "BrownForFFTheme.jpg"
    },
    "colors": {
      "frame": "rgba(245, 206, 152, 1)",
      "tab_background_text": "rgba(13, 1, 1, 1)",
      "toolbar": "rgba(245, 169, 54, 1)",
      "bookmark_text": "rgba(8, 4, 4, 1)",
      "toolbar_field": "rgba(255, 250, 250, 1)",
      "toolbar_field_text": "rgba(15, 1, 1, 1)"
    }
  }
}