As Mayhem says, there are bulbs available pre-colored either as a normal
lens coating or a
dichroic coating which will give an even better feel to the light given off.
Lamp dip is rated for a maximum of 40 watts. The minimum wattage available for a
PAR 38 is 45 watts and while this probably would work, I would not recommend it.
I have never seen a clip on
gel frame for a
PAR lamp. Given it’s
concave face on most of these lamps, such a
gel frame
clipping directly to the lamp probably would have problems. Such
gel frames are available for MR-16 lensed lamps which clip directly on however.
Instead it’s more a question of the
fixture the
PAR 38 is mounted in, or more important the snout for the
fixture. At times with some A-15 lamp fixtures that kind of looked like a long slender cup with lamp
base in it, I was able to make a
gel frame for them using a
gel,
masking tape and plastic tool dip. Just a question of making some form of cup which slid over the end of the
fixture’s cylinder shape sufficient to hold the
gel in place. Other fixtures such as those from Halo and designed for
track lights, frequently have a
cover at the tip of the
fixture that can install either roundells avalable from amongst other sources - American DJ, or
gel shoved into the hinged
cover area. A roundell be it of plastic or glass and in spot,
clear or flood beam spread is generally available in a
PAR 38 size given you know who to shop at. Just a question than of a
fixture that will hold it. Some if not most of the entertainment lighting
PAR 38 fixtures have
gel frame brackets at the tip of the can which than can hold either that
roundel in a
gel frame or a
gel in it. Short of a entertainment lighting
fixture, and at least on a architectural
fixture that either has a front
cover at the tip of the
instrument or at least the
barrel of the
fixture extending beyond the lamp your choices are limited due to the shape of the
bulb. Best to go with a colored lamp instead, than you also don’t have to worry about burn
thru which will probably be the case anyway given proximity.