scasteloLEDs are NOT centered unless you own a keyboard with Logitech's Romer-G or that weird Steel Series/Kailh HS-1 switches. If you have MX-type switches, LEDs are either above center or below center.
kschangI mean centered on the side of the key, not centered on the middle of the switch. This keycaps have some legends like the Shift ones aligned to the left, so they are going to be dimmer than most of the other legends.