Hello @Stephen Cox ,
Welcome to Q&A Forum!
Please use the below JSON formatting:
{
"$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
"elmType": "div",
"txtContent": "@currentField",
"style": {
"background-color": "=if(Number(@currentField) == 0, '', if(@currentField >= @now + 2592000000, '#AFF8C9', if(@currentField >= @now + 86400000, '#EEBB2F', if(@currentField <= @now, '#F06C47',''))))",
"font-weight": "bold"
}
}
Reference:
Thanks,
Echo Du
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