Colors
Use the fill prop to change the icon color (defaults to currentColor):
<script>
import { Alarm } from '@boxicons/svelte';
</script>
<Alarm fill="#ff0000" />
<Alarm fill="rgb(0, 128, 255)" />
<Alarm fill="currentColor" /> <!-- Inherits text color -->Opacity
Control transparency with the opacity prop:
<Alarm opacity={0.5} />
<Alarm opacity="0.75" />