Wild hair runner up goes to refactoring some of my Sass variables into CSS variables … opening up all kinds of theme parameterization possibilities for the theme consumer without having to know a lick of code.
<body style="--md-header-bg: var(--md-header-bg-light); --md-footer-bg: var(--md-footer-bg-light); --md-footer-link-color: var(--md-footer-link-color-dark); --md-footer-link-hover-color: var(--md-footer-link-hover-color-dark); --md-nav-link-color: var(--md-nav-link-color-dark); --md-nav-link-hover-color: var(--md-nav-link-hover-color-dark); --md-nav-link-hover-shadow: var(--md-nav-link-hover-shadow-dark); --md-nav-link-selected-shadow: var(--md-nav-link-selected-shadow-dark); --md-copyright-color: var(--md-copyright-color-dark);">
Any one of those MFers could just as easily be {{/* site.Params.my_awesome_parameter_value */}}