I have a cake to do that requires very basic airbrushing as picture shows. Aqua is the colour theme and i have no idea where to start! I am in Australia so ebay is my best chance of purchasing a wilton colour mist.....do they have aqua? ..............can i use lustre dust and a bit of imagination and still get the same effect????
Should I invest in a spray gun....I don't even know what is used as the colouring in the gun 
your help iwill be much appreciated!!!!! 
Dear Mmmmcake,
Unfortunately, the only way I know to get an airbrushed look is to use an airbrush. I invested in one ($200.00 US) and it was one of the best investments I've ever made! Check out my pics...most of my recent cakes have incorporated airbrushing in some way.
You can cheat a little and go to a hobby store and buy a modelers airbrush set which is basically a can of compressed air, a hose, a gun and a bottle to hold your color. Not sure how those rigs hold up against luster dust and vodka (mine clogs like no tomorrow and it's not a cheap set), but if you don't want to invest serious money, you may be able to get away with it!!
Good Luck to you!!
RobzC8kz
mmmm -
If I were you I would give the luster dusts a shot. Experiment first on a bit of fondant, but I would think you'd be able to get pretty close as long as you use a big fluffy brush and plenty of dust.
BTW - surprisingly enough, a gradually fading effect is one of the more difficult things you can do with an airbrush, or at least that's what my airbrushing book says. I haven't had occasion to try.
I would get the airbrush!! I got one and needed it for one cake but now I find new ways to use is and I can even use it with lusterdust and vodka. The colors are food colors and you can mix them to make exactly what you want.
http://www.kopykake.com/cd_compressor_kroma_jet.html
PS I would just get the started one for now!
GOOD LUCK!!
I just bought an airbrush of ebay I used on the weekend and I am in love. I got a couple of specific airbrush colours, blue cause I needed to use it, black and red, but you can mix food colour with alcohol I've been told as well. If you want the specifics of the brush and compressor I got PM and I'll send the details, I'm pretty sure the seller sells them regularly not a one off, it was $215 which included free delivery by courier and arrived within 2 days of payment they were very quick.
I'm now looking for excuses to use it over the coming weeks.
Wilton does make cans of spray color now. I've used them in the past before I bought my airbrush. They work well on large areas and blending (fading), but for detail work are not that great. They do not have an adjustable nozzle so you only get one spray pattern to work with. BUT...they do work! Except black. I don't know why, but they're black comes out so light it's barely even gray...don't recommend using the black.
I would truely recommend buying an airbrush kit. You may think you're only going to use it on one cake, but once you buy it, you'll think of excuses to use it more often!!
I've read some decorators use this too. http://www.prevalspraygun.com/
I'm not sure where you can get it there, but it's sold in hardware stores like Lowes and Home Depot here.
From what I've read it's good to use with the luster dust and alcohol combo, because it doesn't clog up like air brushes do.
I haven't tried it myself, yet. I'm hoping to get one next week and try it, but I'll probably end up having to paint the cake instead of spraying it, sadly.
Hope this helps,
Holly
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