Themes
Themes are actually just gzipped css file that overload current css, their name must start by theme- to be recognized and have proper .gz extension if they are compressed.
You only need to put inside the properties you want to customize.
Example of small changes
Section titled “Example of small changes”.feather-icon-container svg,span.input-group-addon,span.form-input,input,select,span.text-dark,label.text-dark,label.hide-low,section,button,.navbar,.modal-container,body,.empty,html{background-color:rgb(200, 200, 233)!important;color:white!important;
}
a svg.esp3dlogo{color:#c0c0c0!important;}
.form-switch input:checked + .form-icon { background-color:white!important;}
a.active svg,a.active label.hide-low{color:blue!important;}
.navbar{border-bottom:white solid 0.5px;}
span.navbar-section{background-color:#0e0e6d!important;color:white!important;}How to set a new theme
Section titled “How to set a new theme”Upload theme
Section titled “Upload theme”Upload gzipped (or not) theme using the flash file system panel in dashboard

Select theme
Section titled “Select theme”Select theme in interface settings

Once changes are applied, WebUI will automatically restart

Mores themes in themes