Examine source code of Forest_Theme

{
  "name": "Forest_Theme",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "rgba(5, 8, 2, 1)",
      "tab_background_text": "rgba(15, 26, 3, 1)",
      "toolbar": "rgba(1, 15, 6, 0.58)",
      "bookmark_text": "rgba(236, 240, 209, 0.55)",
      "toolbar_field": "rgba(236, 240, 209, 0.55)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)"
    }
  }
}