The trouble with a fluid bed is everytime you want to change colors you have to empty the fluid bed (use a plastic funnel to get most of the paint back in the jar). Clean the fluid bed out with a dry cloth (you don't want any moisture in your painy and you don't want to mix any old color in your new color) I just fluff the paint in the jar with something like a small screwdriver, paint a couple of jigs and fluff some more. Once you get on to painting you can tell when you have to fluff the paint. The big thing is to keep the coat thin. If you are painting two or three colors; then coat the jig with the major color, then reheat the jig and apply the second and third color by tapping a paint brush with the new color over the spot you want to paint. Another way is to spread the second and third color on oppsite sides of a papper plate; so you can hold the jig flat with a pair of forceps and just barely touch the jig to the paint, rotate jig and touch the third color and reheat with your heat source. Like anything it takes some playing around to see what you like.