Anyone using elect. wire markers?

Looking for some input:
I don't really see a need to buy several different colors of electrical
wire for my homebuilt when you can easily use just one color (white?) to do
it all. The only thing you then need to do is to mark the ends of the wires
to identify the circuits and where it all goes (easy enough). In fact, your
electrical scematics would be even better if each terminal were identified
with a proprietary number rather than just a color of wire or colored
marker.
So what I'm asking is if anyone of you have gone the wire marking route,
and if so, what type and brand of tape, or collars, or whatever you have
found to be not only frugal, but also to be permanent and not fall off at
some time later?

TIA
MJC