Quoted from Ricochet:
You are welcome. Sunlights are a bit broader spectrum than warm white. Some rightfully feel like it may be a bit cold for this machine as it is normally warmly lit with incandescents. Stock incandescent light gives the machine a more earthy brown tone. So the LEDs definitely brighten the game up and change the overall look. Also with mine the back glass has a different tint and hue than the stock translite.
One thing is for certain ... sunlights for the inserts really makes it pop... even if you were not to use them for the GI. The inserts in this machine are complex... lots of different colorings... using the sunlights really shows them off nicely.
I get why some would feel that way. What's really unique about IJ is there's a lot of detail in their inserts so highlighting those in the game makes a lot sense (at least to me).