harbour-sailfin/core/doc/custom.css

html {
		--primary-color: #be48d6;
		--primary-dark-color: #7a2e89;
		--primary-light-color #e256ff;
}

@media (prefers-color-scheme: dark) {
    html:not(.light-mode) {
		--primary-color: #be48d6;
		--primary-dark-color: #7a2e89;
		--primary-light-color #e256ff;
    }
}