Hello again @sanjosetour ok I thought you were on about New-UDColumn anyways I looked at the documentation here Table - PowerShell Universal and used the example given…however like yourself I was unable to style the component even though I found the class was .MuiTableCell-head that you need to customise…then I found this documentation:-
Cascading Style Sheets - PowerShell Universal
So you can easily copy the CSS rule from the browser then add the background color for that. I will record a quick gif to show the styling is possible…
Or I did infact build a custom component and published that the other day which you can read about here:- React Flexy Table | Powershell Blog
which also gives you an alternative component to use