I mix my own colors from artist acrylics in a tube. Then, I thin them into a spray-able thinness with Future. Easy peasy.
What kind of paints you got?
Gaz
The thing about forums is, you post a question and an answer comes back you had never even thought of

Usually, I spray using rattle cans and brush paint acrylics. I like the flexibility of acrylics, the ability to easily mix them and thin them out with water. If there is absolutely no other option available I break out the dual action airbrush - and I'd use my cheap'n'cheerful glass bottle single action Badger if I could get away with it
Artists acrylics in tubes are easy to buy where I am - guess I could have a play with that
Thanks Gaz, I could try that
Richard