{{ define "partials/hugo-blog-awesome/manifest-background-color" }}
    {{ $bg := ""}}
    {{ if .Site.Params.webmanifest.background_color }}
        {{ $bg = .Site.Params.webmanifest.background_color }}
    {{ else if eq .Site.Params.defaultColor "dark" }}
        {{ $bg = "#131418" }}
    {{ else }}
        {{ $bg = "#ffffff"}}
    {{ end}}
    {{ return $bg }}
{{ end }}

{{ $background_color := partial "hugo-blog-awesome/manifest-background-color" . }}

{{
    $ctx := merge (.Site.Params.webmanifest | default dict)
    (dict
        "name" (.Site.Params.webmanifest.name | default .Site.Params.sitename | default .Site.Title)
        "short_name" (.Site.Params.webmanifest.short_name | default .Site.Params.sitename | default .Site.Title)
        "start_url" (.Site.Params.webmanifest.start_url | default .Site.Home.Permalink)
        "theme_color" (.Site.Params.webmanifest.theme_color | default "#434648")
        "background_color" $background_color
        "display" (.Site.Params.webmanifest.display | default "standalone")
    )
}}
<link rel="manifest" href="{{ (resources.Get "icons/site.webmanifest" | resources.ExecuteAsTemplate "site.webmanifest" $ctx).Permalink }}">