Examine source code of Black Cubes Alloy

{
  "name": "Black Cubes Alloy",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "black cubes aloy.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(110, 110, 110, 1)",
      "toolbar": "rgba(0, 0, 0, 0.55)",
      "bookmark_text": "rgba(163, 163, 163, 0.98)",
      "toolbar_field": "rgba(0, 0, 0, 0.25)",
      "toolbar_field_text": "rgba(94, 94, 94, 1)"
    }
  }
}