yt-local/youtube/static/light_theme.css

:root {
    --background:           #FFFFFF;
    --text:                 #212121;
    --secondary-hover:      #212121;
    --secondary-focus:      #FAFAFA;
    --secondary-inverse:    #FFFFFF;
    --primary-background:   #F5F5F5;
    --secondary-background: #EEEEEE;
    --thumb-background:     #F5F5F5;
    --link:                 #212121;
    --link-visited:         #808080;
    --border-bg:            #212121;
    --border-bg-settings:   #91918C;
    --border-bg-license:    #91918C;
    --buttom:               #FFFFFF;
    --buttom-text:          #212121;
    --button-border:        #91918C;
    --buttom-hover:         #BBBBBB;
    --search-text:          #212121;
    --time-background:      #212121;
    --time-text:            #FFFFFF;
}