Examine source code of TochiotomeSayu

{
  "name": "TochiotomeSayu",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "5982e2518ae38ca1.png"
    },
    "colors": {
      "frame": "rgba(107, 86, 76, 1)",
      "tab_background_text": "rgba(36, 145, 45, 1)",
      "toolbar": "rgba(97, 56, 56, 1)",
      "bookmark_text": "rgba(255, 225, 0, 1)",
      "toolbar_field": "rgba(179, 118, 118, 1)",
      "toolbar_field_text": "rgba(192, 230, 166, 1)",
      "tab_line": "rgba(255, 46, 46, 1)"
    }
  }
}