Examine source code of Nature Soil Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nature Soil Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(225, 239, 229)",
      "toolbar_text": "rgb(153, 96, 219)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(247, 247, 247)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(112, 233, 248)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(43, 229, 54)",
      "icons_attention": "rgb(82, 209, 214)",
      "ntp_background": "rgb(155, 176, 218)",
      "popup_highlight_text": "rgb(51, 234, 93)",
      "tab_loading": "rgb(112, 233, 248)"
    }
  }
}