Colour of status field and priority field

Hi Team,
I was using RT 4.0.5 and the color of status field was there. (like the new was showing in red , open was showing in blue ). And also the background color of priority field was there.(like for priority low the field was blue).

Now I upgraded it to 4.2.15 ,but not able to get any color. Neither the status color or priority color is coming. Could anyone please kindly help…