funky-framadate-front/src/styles/themes/_red.scss

#big_container {
	&.theme-hot-covid {
		background: #ffbca4;
		color: #501016;

		h1::after {
			background-color: #850003;
		}

		.btn--primary:focus,
		.btn--primary:hover,
		.btn--primary:active,
		.btn--primary {
			background-color: #850003 !important;
		}
	}
}