Andoza:ja-readings/style.css

.jouyou-reading {
	background-color: rgb(224, 255, 255); /* fallback */
	background-color: rgba(224, 255, 255, 0.5);
}

/* dark mode colors; styles need to be duplicated exactly between these two media blocks */
@media screen {
    .jouyou-reading { background-color: rgb(41, 44, 44); background-color: rgba(224, 255, 255, 0.15); }
}
@media screen and (prefers-color-scheme: dark) {
    .jouyou-reading { background-color: rgb(41, 44, 44); background-color: rgba(224, 255, 255, 0.15); }
}