INTERDECAL can realize your decals from photos and sketches, paper or PC drafting (Preferably on CorelDraw) or from supplied films.
Precision screen printing is done colour per colour.
Quantities are 150 or multiples of 150.
Cost is according to the complexity of drafting, the price of films (directly related to the size), and for screen printing according to the size again, and the number of colours.
Colours common to all decals (if necessary) are : White, silver, yellow, gold, orange, vermilion, medium green, medium blue, reflex blue, black. Any other colour will be charged in addition for the cost of an extra screen and 2 hours work for 2 person to print that colour and clean equipment.
In case of doubt, you can always ask for a quotation.