colour dates based on seperate calendar e.g. public holidays

[entwisi]

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I want to be able to show dates such as public holidays ( selectable based on location/requirement and fed in json or JS array format ) pr other dates that may impact the tasks ( we use it as a planner for changes in an environment and wish to show change freeze periods and public holidays where resourecs may be scarce )

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I would like to feed a calendar ( JSON/JS array ) of dates that i want to highlight as per weekend class being able to specify colour of block displayed. prefereably having multiple calendars supported. e.g. feeding a list of public holidays and for multiple locations e.g. INDIA and UK or other aspects that could impact deliverables

Describe alternatives you've considered
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Looked at weekend class but not yet competant enough t work out how to extend it to specifeld dates

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