SIMPLY SPRAY - UPHOLSTERY FABRIC PAINT

We all know this recession is hard. The world is full of financial uncertainties. Obviously after six months on maternity leave, self-employed with five kids and a mortgage, this isn't the best year to splash out on a new three piece suite but I saw Simply Spray upholstery fabric paint on the Internet and figured I'd found a stopgap until better times.
I splashed out on three cans of coffee coloured paint figuring I'd start with the living room futon as it is covered in coffee stains, felt tip stains, footprints, you name it!
On pressing the spray nozzle, a haze of pale brown paint came out beautifully then suddenly lumps of thick, dark paint shot out wrecking the surface of the evenly coloured futon and finally the can jammed. We tried over and over but each spray session ended with blobs of permanent ink dripping onto the fabric. It then completely seized up and refused to spray despite the can being at least half full.
The paint can't be washed off, can't be spread out and can't be completed. I would thoroughly recommend, however hard up you are, that you avoid Simply Spray like the plague. It is an utter waste of time and money. Instead of spending £20 to save me buying a new £150 IKEA futon cover I have now spent £20 to completely destroy a borderline usable futon cover, forcing me to buy a new futon cover. Oh joy!