On this page (
http://www.calclassic.com/repaint.htm) he ref. to "paint kits" I migth not read his text correct:
You now have two choices. Paint the BMP image supplied with the aircraft (a single layer), or use a layered image to paint with. There are two possibilities to get a layered image - either you might have a "paint kit" that already contains a layered image, or create your own. It is my personal preference to paint using layered images (except for very simple repaints), and thus we will use that. If you do not have a paint kit, you will need to create a layered PSD image - this is described in Part 6 . I will now assume you have a layered image.