@anlauto - I left the blue light diffuser lenses in place. The only mod was done to the LED bulbs themselves to get them in the hole. Also since they are 4 sided I tried to clock them in to position so that one chip was facing the gauges. Honestly though I dont think it would make any difference. They put out a lot of light.
@djais1801 - These go above the gauges and act as a flood light to illuminate the panel.