it's funny when u ask that.. u mentioned u wanna change the color yet u ask us what color can be replaced.. isn't that your decision?
scissors can't cut the fabric tube? if not try design knife/ pen knife

Price also follow the same direction...
except
<--more $$ than 

Before painting kit, use primer/surfacer...
After painting kit, top coat
the Usual steps
Pre-assemble --> sand --> primer/surfacer --> paint --> topcoat(gloss(for decals and panel lining washing method))(can skip) --> panel line --> decals --> top coat

its not that difficult actually. try reverse washing.

quite simple actually. you gotta paint the gold parts in lacquer paint 1st. very important that you use lacquer ya.. after the paint has set,get black enamel and just paint over the whole thing. beauty of this is that once everything is cured, you can just use a cotton bud soaked in zippo fluid or enamel thinner to wipe off the black which is painted over the gold. enamel thinner will only react with the enamel paint and not lacquer, so the black will go off, but the gold at the bottom stays.

if you are still unsure, you can google.

i thought paint black 1st then add gold on top will have nice shiny gold. guess im wrong

whoa reading what u wrote makes me worry it might not happen so smoothly.

I believe when shauno share about this, he's assuming u r using primer as base. Without surfacer or primer, the paint might not be able to hold strongly enough onto the surface to sustain heavy washing (The technique shauno shared), the lacquer gold might, just might, come off too when u r wiping the top enamel black.

not 100% failure but very risky.
To be safe, usually modeler will do this:

primer/surfacer (The surface will become grey in color covering the original plastic) ---> gloss lacquer black (This layer of black is to help the gold looks better) ---> Gold ---> gloss top coat (An extra protection to the gold paint) ----> enamel black ----> wipe enamel black (A general term for this technique = wash)

a lil OT, but didn't you just spend close to 1k on your PG SF? 60 bux is so little in comparison to the cost..

Tamiya chrome maker takes around 1 day ++ to totally dry =,= ... summore if u touch it hard.. ur finger print will be on it.. so handle with care.. and I think it's oil base I think..=,= I dun really like to use.. but it's damn nice... so I just normally color it.. n leave it to dry without touching it for few days...

Gundam Marker normally is water base

So if I'm recolouring the whole figure with gundam markers, is it still essential for me to prime it? or Primer only works best with those tamiya bottled paints?