searxng/searx/templates/courgette/color.css

 .autocompleter-choices li:hover,
.checkbox_container label:hover,
.checkbox_container input[type="checkbox"]:checked + label,
#sidebar,
#suggestions input[type="submit"]:hover,
#suggestions input[type="submit"]:focus,
input[type="submit"],
.engine_checkbox label,
.engine_checkbox .deny,
#search_submit{
	background-color: {{ cookies['courgette-color'].split()[0] }};
}

.result_title a,
.row a,
.title h1{
	color: {{ cookies['courgette-color'].split()[0] }};
}

#answers {
	border-color: {{ cookies['courgette-color'].split()[0] }};
}

#search_submit:hover,
#search_submit:focus,
#sidebar input[type="submit"]:hover,
#sidebar input[type="submit"]:focus {
	background-color: {{ cookies['courgette-color'].split()[1] }};
}

input[type="submit"]:hover,
input[type="submit"]:focus {
	background: {{ cookies['courgette-color'].split()[1] }};
}