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: 22.214.171.124 (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.