I personally have had no trouble buying Protec in the past, from a supplier in Wollongong, however, I am not using it in future projects as it is very porous and not very durable and it is very soft. I'll give it that it's cheap. I have switched to
automotive enamel which is much harder once dry.
Now, about getting the colour you want:
I learned this from a Jeep person who wanted
Light Stone colour for his Jeep. He said, he went down to the local toy shop and bought a tin of modeler's paint. You know the type (Tamaya, airfix etc) He painted this onto a grey card and it was the colour he wanted. He then presented the painted card at the auto paint shop and got them to mix accordingly. Not 100% perfect but certainly a way to get a good match.
I use a place here in Nowra which is fairly antiquated, but they can kind of mix what I want. Being
automotive enamel its a bit more (thrice) more expensive but a lot better paint to spray and harder as well as less porous. And it does not break down in fuel.
I'm not about to respray 112-464 again. I used 12 litres of primer,Two litres of black enamel, about 12 and a half litres top coat of Protec on it. .... Much more than I thought!
Be aware that
how you paint will determine the flatness of the 'drab' so to speak. If you lay the paint on heavy you will get a shinier coat than a quick light coat. Though doing light coats you run the risk of making the paint so than that it provides little protection against corrosion.
Ian
