I have a somewhat-odd request:

I am looking for color-matched knobs, banana jacks, binding-posts,
banana plugs, etc. Matching colored wires would be really cool too.

Having at least eight distinct colors available would be really nice.
I know that last one is difficult because I'm a very typical male who
cannot name more than four different colors off the top of his head.
But I have no problem looking at any color-coded resistor and having
the value and tolerance immediately register in big shining numbers in
my brain, so I don't think the problem is my eyes, I think it's just
that I'm male :-).

I believe that HH Smith etc. used to do stuff like this and while
they're still around I don't see any colors but red and black in their
catalog.

Looking in the Digikey catalog they list "Emerson"/"Johnson" as the
maker of some banana plugs and jacks available in ten colors. If I
could get matching colored knobs and maybe even test lead wire, I
would be so so happy.

Any leads (including just "how to paint random knobs in matching
colors") would be greatly appreciated.

In case nobody else has figured it out yet, this is for a super-duper
bench tube tester that currently is just a bunch of stuff scattered
across my bench but which in my head I could turn into one mega-super
tube tester/curve tracer. Black would of course be ground, and I
suppose the two filaments should be green, and maybe the cathode can
be black, but I still need three other colors (plate, grid, screen)
and at the moment can only name two, so seeing a catalog page with a
color-coded lineup of everything would so make my vision come true!
Many decades ago I saw a picture in a magazine of what to my juvenile
eyes looked like what must be the ultimate tube tester of all time,
and while I do not remember the model or make I do clearly remember
row after row of gleaming colored knobs and jacks. Does this
description ring a bell with anyone?

Tim.