How to change the background color of DataTable header

I am running the R shiny application I am not able to see the header names since the text and background color is white I want to change the background color but in UI.R script i am not able to find the background color for the section

I am not able to see the header names since text and background color is white I want to change the background color


please look into the above image file help me with the suggestions answers

if I have select the date header names shows now
Please look into the below snap


any help would be very happy :grinning: