I have this Gridmesh in the Background of my plottet table. How do i Change the Background other then with theme
https://i.stack.imgur.com/PHpd5.jpg
cor.t=mydata
tt3 <- ttheme_minimal(
base_size = 8,
core=list(bg_params = list(fill = paste(substr(HeaderFarbe[n+1],
start = 1, stop = 7),"4D",sep=""),
col=HeaderFarbe[n+1]),
fg_params=list(fontface=3)),
colhead=list(fg_params=list(col=HeaderFarbe[n+1], fontface=4L)),
rowhead=list(fg_params=list(col="red", fontface=3L)))
plot(tableGrob(cor.t ,theme=tt3))