Addings single and duotone colors to theme.json

I’ve added a basic duotone color to my theme.json file in my sage theme. When I go into the admin area and select either text or background for color, I don’t see my custom duotone color.

theme.json

"color": {
      "custom": true,
      "customDuotone": true,
      "customGradient": false,
      "defaultDuotone": false,
      "defaultGradients": false,
      "defaultPalette": false,
      "duotone": [
        {
          "colors": [
            "#000000",
            "#FFFFFF"
          ],
          "slug": "foreground-and-background",
          "name": "Foreground and Background"
        }
      ]
    }

I forgot to mention that I have ran both npm run dev and npm run build and it doesn’t show up after either of those.