Update Theme: PywalZen

[Axenide]

Hi, I made a PR a while ago. Just in case, I'll leave it here: #708
Thanks!

[Axenide]

Just in case I'll leave this here:
chrome.css

:root {
  --zen-primary-color: #d9d9d9 !important;
  --zen-colors-primary: var(--tab-loading-fill) !important;
  --zen-colors-secondary: var(--tab-loading-fill) !important;
  --toolbarbutton-icon-fill: var(--tab-loading-fill) !important;
}

:root:has(#theme-PywalZen[uc-pywalzen-darkness="default"]) {
  --zen-colors-tertiary: var(--lwt-accent-color) !important;
  --zen-main-browser-background: var(--lwt-accent-color) !important;
  --zen-themed-toolbar-bg: var(--lwt-accent-color) !important;
  #urlbar[breakout-extend="true"] > #urlbar-background {
    background: var(--lwt-accent-color) !important;
  }
}

:root:has(#theme-PywalZen[uc-pywalzen-darkness="dark"]) {
  --zen-colors-tertiary: color-mix(in srgb, var(--lwt-accent-color), black 25%) !important;
  --zen-main-browser-background: color-mix(in srgb, var(--lwt-accent-color), black 25%) !important;
  --zen-themed-toolbar-bg: color-mix(in srgb, var(--lwt-accent-color), black 25%) !important;
  #urlbar[breakout-extend="true"] > #urlbar-background {
    background: color-mix(in srgb, var(--lwt-accent-color), black 25%) !important;
  }
}

:root:has(#theme-PywalZen[uc-pywalzen-darkness="darker"]) {
  --zen-colors-tertiary: color-mix(in srgb, var(--lwt-accent-color), black 50%) !important;
  --zen-main-browser-background: color-mix(in srgb, var(--lwt-accent-color), black 50%) !important;
  --zen-themed-toolbar-bg: color-mix(in srgb, var(--lwt-accent-color), black 50%) !important;
  #urlbar[breakout-extend="true"] > #urlbar-background {
    background: color-mix(in srgb, var(--lwt-accent-color), black 50%) !important;
  }
}

:root:has(#theme-PywalZen[uc-pywalzen-darkness="yet-darker"]) {
  --zen-colors-tertiary: color-mix(in srgb, var(--lwt-accent-color), black 75%) !important;
  --zen-main-browser-background: color-mix(in srgb, var(--lwt-accent-color), black 75%) !important;
  --zen-themed-toolbar-bg: color-mix(in srgb, var(--lwt-accent-color), black 75%) !important;
  #urlbar[breakout-extend="true"] > #urlbar-background {
    background: color-mix(in srgb, var(--lwt-accent-color), black 75%) !important;
  }
}

:root:has(#theme-PywalZen[uc-pywalzen-darkness="pitch-black"]) {
  --zen-colors-tertiary: black !important;
  --zen-main-browser-background: black !important;
  --zen-themed-toolbar-bg: black !important;
  #urlbar[breakout-extend="true"] > #urlbar-background {
    background: black !important;
  }
}

#urlbar:not([focused="true"]):not([breakout-extend="true"]) > #urlbar-background {
  background: color-mix(in srgb, light-dark(#fff, var(--zen-colors-secondary)) 35%, transparent 65%) !important;
}

#commonDialogWindow {
  background-color: black !important;
}

preferences.json

[
    {
        "property": "uc.pywalzen.darkness",
        "label": "Darkness level",
        "type": "dropdown",
        "defaultValue": "default",
        "options": [
            {"value": "default", "label": "Default"},
            {"value": "dark", "label": "Dark"},
            {"value": "darker", "label": "Darker"},
            {"value": "yet-darker", "label": "Yet darker"},
            {"value": "pitch-black", "label": "Pitch black"}
        ],
        "disabledOn": []
    }
]