I *think* what cedar is talking about is just using a cover or different colour glass in the party lights. like those red, green, blue etc incandescent ones that are just a coating on a clear glass bulb...so its like turtle says, just taking away from the spectrum.
When i was breeding reptiles we often just went by the more k the better. simply because the UV A-B-C are past the blue end (6000k+ for the blue), and We want UVB in particular because this allows us animals to absorb vitamin D3.
Lumens is an efficiency thing...and incandescents suck..like mention before 1300-1700 for 100watt bulb...thats 13-17/w. you can readily buy philips compact flouros that are 50-60/watt...and LED are commonly sold at 60-80/watt. Taiwan National University is (or has?) installing LED street lamps (a damn good idea i think!!!!! LED are very directional, also cuts back on light pollution....look at Taiwan on a satellite image at night
). They only said that the ones being installed were "over" 100/watt....not bad considering many street lamps here are 4' flouros (weird i know) or hps.
Black lights (real black lights) are high in UVA and i am fairly sure that is why they are so bad for the eyes, and probably the skin as is all UV in excessive amounts. here are some scans of copies i made a few years ago when researching lights for reptiles.
Most of these are from Philips or Sylvania to do with spectrum and UV radiation.
Basic colour chart showing common bulbs. Philips.
