themes-wordpress/indice/styles/mono.json

{
	"$schema": "https://schemas.wp.org/trunk/theme.json",
	"settings": {
		"color": {
			"palette": [
				{
					"color": "#ffffff",
					"name": "Base",
					"slug": "base"
				},
				{
					"color": "#1a1a1a",
					"name": "Primary",
					"slug": "primary"
				},
				{
					"color": "#1a1a1a80",
					"name": "Secondary",
					"slug": "secondary"
				}
			]
		}
	},
	"styles": {
			"typography": {
				"fontFamily": "var(--wp--preset--font-family--ibm-plex-mono)"
			}
	},
	"title": "Mono",
	"version": 2
}