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My understanding of the subject:
The output of any of those trendy bulbs with the colored coatings is actually less than that of a clear bulb with the same specs. You are just seeing a different (limited) part of the spectrum, so it fools you into thinking they are as bright or brighter than a normal bulb of the same wattage. Not to mention, you are usually paying twice or three times as much for that limited output!
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