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The white light emitted by these is much closer to true white (sunlight) than any incandescent could ever be. White light has a color temperature of about 5500 degrees Kelvin, while incandescent lighting falls somewhere around 3200 degrees. These LEDs are pretty good at producing a white that is neutral without the undesired yellows or blues. BTW, it's the arc that is actually white, not the incandescent.
Taimya model paints comes in a clear water based acrylic amber. Just use enough coats to your desired color. Another quick way is an orange permanent color marker. Use some blue and green to duplicate fluorescents. I use these in model railroading all the time. Most (not all) of them will light at about 2 volts dimly. If you want them to last, don't exceed 4.5 volts. 4 volts is almost as bright as the 5 volt V-max, and you can expect 50,000 hours from them. Using NiMh cells for power, 4 AAA's (4.8 volts) with a silicon diode to drop the voltage .707 volts= 4.09 volts, the batteries die of old age before one of these LED's discharge them.
If the beam is too narrow for you (it has been for me), take some 600-2000 grit wet-or-dry sandpaper and lightly sand the end of the "lens". Good LED's, good price.
Great led WELL WORTH the money - it is extremely bright- a few of these, or even one would make a great flashlight. Thw color of light it emits is a pure white like the color of light from a camera flash. The difference between normal incadescent lights and this is that it doesnt have the dull yellow tint to it.
These are nice LEDs but the white is that of an electric arc rather than that of an incadescent lamp. I bought them to light a model ship and I will try dyeing them yellow---Now to find a dye that works.