Re: Where can I get coloured hardware?
The problem with coloured hardware is that you have to take into account the processes that are used.
Powdercoating has been done before, but its very expensive and hard to mass produce - it makes for very expensive, low number hardware production. It also makes all the parts larger as it doesn't change the colour of the metal itself, but rather deposits a layer on the top which is then hardened. This means it's fiddly to get parts to mate with clean segments and with tight fits. Screws for example typically need the threads reaming out again.
The other alternatives are electroplating, which is how chrome and gold are done, but there isn't really a readily available purple metal, so your colours are limited, and anyone with gold hardware will tell you how quickly it wears off.
Your third alternative is anodising, but this is difficult to do on some metals and for the most part is only super-effective on aluminium parts. Processes do exist for zinc, which is what ibanez trems are made of, but they're not super common, and besides which, ibanez trems aren't made solely of zinc, and other parts are made of steel. Steel is nearly impossible to anodize, depending on the carbon content (Which in a trem, will be very high carbon content as hardness is the key concern, and certainly not flexibility or ductility.)
Your only practical choice would be to buy chrome or plain steel parts, and have a local shop powder coat them - but as mentioned, you'd need to invest significant time, effort, and money, in order to come out of the other side with fitted, working parts.