Examine source code of Pretty mare

{
  "name": "Pretty mare",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "PSX_20200622_220151.jpg"
    },
    "colors": {
      "frame": "rgba(8, 81, 240, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(210, 14, 245, 1)",
      "bookmark_text": "rgba(132, 139, 232, 1)",
      "toolbar_field": "rgba(230, 164, 235, 1)",
      "toolbar_field_text": "rgba(169, 118, 232, 0.79)"
    }
  }
}