'97 Regal dash lights fading

Just would like to know why this display on the left (under RPM tach) seems dimmer than the rest of the dash speedometer? Mechanic indicated it is LCD display. The mpg, fuel range , oil life digits are readable. Is it hard to replace and expensive? Just would like the display lights to be consistent througout the dashboard.


Any tips appreciated, overall solid vechicle a beauty to drive all year!!