LEDs (and other non-incandescent lamps) are missing an equal distribution of energy across the spectrum (based on the ideal black body radiator).
A filter would block other light, but if there is not much energy in the filter pass band in the first place (say an LED of some sort), there will not be much "filtered light" to let through.
A major industrial use light company
FoxFury (see link for example) adds a bit of green to make the LED light render colors better...
You would probably be better off adding something like on the ratio of 1:5 (or so) of green to white (and/or other colors too like red) to get a spectrum that works for you (test on-the-job color pallet--such as a wiring harness if you work with communications circuits)...
There have been multiple threads on this subject--but much of this depends on your personal needs and desires (and sometimes your personal eyes' too).
Certainly, a well driven incandescent (and regulated would be nice--but few lights have regulated incandescents--see SureFire A2 Aviator) is closer to what the human eye evolved under--but even that varies a lot (sunrise/set, high noon, cloudy, shaded, moonlight, etc.).
-Bill