Copy value and background from Admin to Client
This requires an installable onEdit(e) trigger. You will also need the id of the client spreadsheet. Note you cannot run this from the Script Editor unless you do it from another function that supplies the event object. See this example.
function updateClient(e) {
var ss=SpreadsheetApp.openById('ClientSideSpreadsheetId');//You need to provide id here. You cannot pass other parameters to this function because it a trigger.
var sh=ss.getSheetByName(e.range.getSheet().getName());
var rg=sh.getRange(e.range.rowStart,e.range.columnStart);
rg.setValue(e.value);
rg.setBackground(e.range.getBackground());
}
I tested this on my account and it works. I suspect that you'll have trouble getting it to run so read the answer in the link I provided thoroughly before telling me that it doesn't work.
This is what the event object looks like:
{"authMode":{},"range":{"columnStart":3,"rowStart":18,"rowEnd":18,"columnEnd":3},"source":{},"user":{"nickname":"nickname","email":"email@email.com"},"triggerUid":"123456","value":"3"}