I have a cell “Master.B8” and would like to change both the value and the font color of a cell referencing “Master.B8” from another sheet “Panel1.B8”. So if I change the font color on Master.B8 then Panel1.B8 will also change color.
In my opinion, the best solution is to use the same “Conditional Formatting” for each cell. I assume that both cells always contain the same value. A description for the “conditional formatting” can be found here.
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With me Windows 10 Home; Version 1809; 64-Bit | LibreOffice, Version: 6.2.3.2 (x64).
Unfortunately Conditional Formatting only tests against values and not styles. Think of the Paste Special command and just paste the format, but in this case that functionality is associated with a =[ref]. So something like =Format(B8;Font_Color) or somesuch.
My only other possible option is to create a basic macro that tests the reference cell for font color then changes the current cell font color. Then make that macro a user function. So something like UserChangeFontColor(B8).
Sorry that my post did not help. But there are enough capable users you can tell you how your desire can be implemented.