Examine source code of Subtle Spring by M♥Donna

{
  "name": "Subtle Spring  by M♥Donna",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Subtle Spring H.jpg"
    },
    "colors": {
      "frame": "rgba(252, 250, 237, 1)",
      "tab_background_text": "rgba(33, 32, 32, 1)",
      "toolbar": "rgba(255, 254, 240, 0)",
      "bookmark_text": "rgba(18, 18, 18, 1)",
      "toolbar_field": "rgba(255, 254, 240, 0.07)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  }
}