Examine source code of A dramatic mountain range stands beneath

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "version": "1.0.0",
  "name": "A dramatic mountain range stands beneath",
  "theme": {
    "images": {
      "theme_ntp_background": "theme_ntp_background.png"
    },
    "colors": {
      "frame": [
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      "ntp_background": [
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      "tab_text": [
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      "tab_background_text": [
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      "bookmark_text": [
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      "ntp_text": [
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      "ntp_link": [
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      ],
      "ntp_header": [
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      ],
      "toolbar": [
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      ],
      "toolbar_text": [
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      "button_background": [
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      "toolbar_button_icon": [
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    },
    "tints": {},
    "properties": {
      "ntp_background_alignment": "center",
      "ntp_background_repeat": "no-repeat"
    }
  },
  "description": "a fiery red sunset as the sun dips below the horizon, painting peaks and clouds with glowing color."
}