Examine source code of pastel cats

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "pastel cats",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(124, 88, 125, 0.31)",
      "toolbar_text": "rgb(53, 57, 61)",
      "frame": "rgb(205, 115, 228)",
      "tab_background_text": "rgb(45, 43, 44)",
      "toolbar_field": "rgba(138, 207, 207, 0.53)",
      "toolbar_field_text": "rgba(22, 20, 21, 0.4)",
      "tab_line": "rgb(255, 66, 205)",
      "popup": "rgb(231, 242, 244)",
      "popup_text": "rgb(84, 84, 84)",
      "button_background_active": "rgb(187, 183, 204)",
      "ntp_background": "rgb(108, 102, 133)",
      "tab_loading": "rgb(255, 66, 205)"
    }
  }
}