There are no stupid questions!!!
  Small, colored lightbulbs will work as safelights but
should be tested. The visual color is not always a good
indicator of the actual spectral output, i.e., a red bulb
may enough blue output to fog printing paper. Kodak has a
good test posted on their web site, do a search for K-4 it
should take you to it.
 No safelight is truely safe. Eventually even the best will
cause some fogging. While there are many advocates of bright
darkrooms I think the light level should be no more than
allows for comfortable working. Certainly judging prints by
a safelight is going to misleading even with bright ones so
that should not be a consideration.
 Used Kodak safelights are common at quite reasonable
prices, especially the bee-hive ones. For most variable
contrast and graded paper the Kodak OC safelight is good.
Any paper can be handled under a red safelight but red is a
less comfortable color than amber to work under for long
periods.
 Again colored light bulbs can work but the coloring has to
be complete (no clear borders around the base) and you must
test them.

Not sure I understand your question. Safelights are supplied by the
manufacturers of sensitized goods, and these are the recommended ones
to use.

It is possible that they give safe light, but I would not risk it ...
knowing the price of of a safe bulb.

Bertrand

Red LEDs are very safe.  Red or orange light bulbs may or may not be.  Some
red bulbs transmit a considerable amount of blue light, and orange may be
safer.

To test whether a safelight is safe, expose a piece of paper to mid-gray,
then lay a coin down on it and leave it under the safelight for 2 minutes,
then develop.  If you can see the outline of the coin, the light isn't quite
safe.

This thread has turned into a general discussion of safelights, and
that's healthy, because there is no "safe" safe light, and the
technology of papers and illuminators changes enough that it's worth
keeping up to date.

One idea I picked up working in large graphics darkrooms what that
there are two very distinct kinds of safe light --  area lights and
task lights.
Area lights, like the classic 8x10 Kodak half drum and the Thomas
sodium vapor provide a good, working level of illumination through the
room.  That's fine for not bumping into things, finding the paper
drawer, and washing your hands.

But certain tasks may require specific lighting.  An example in my
darkroom is  checking temperatures.  I have added LEDs to two
thermometers I need to check often, but that are pretty much
unreadable by the area light. A more familiar example of a special
purpose illuminator is the light pipe used on many enlarger
lens-boards or even in the lenses to illuminate the scale of f-stops.

So a reasonable recommendation is the one given to me some years
ago...  Turn down the area light, and put special purpose lights
around to help with specific tasks...  Just make sure these special
lights don't contribute to the overall level or room illumination.

Hope this helps.