Examine source code of kagepro

{
  "name": "Kagerou.Project.full.1724018",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Kagerou.Project.full.1724018.png"
    },
    "colors": {
      "frame": "rgba(0, 81, 255, 0)",
      "tab_background_text": "rgba(219, 186, 198, 1)",
      "toolbar": "rgba(240, 113, 113, 0.58)",
      "bookmark_text": "rgba(227, 123, 156, 1)",
      "toolbar_field": "rgba(250, 237, 242, 1)",
      "toolbar_field_text": "rgba(240, 96, 118, 0.23)"
    }
  }
}