Hmmm, 'tis a pity I don't live near you, I could have done it for you.
Maeg's guide to spraypainting in more than one easy step...What you will need:
Something to spray (duh).
Ideally an airbrush, failing that car aerosol spraypaints will do. Get the colours you want and one can of clear (transparent) paint too.
Some masking tape.
A sheet of heavy paper or two.
A pencil or something to draw your design (you could even print it out I suppose).
A hobby knife or scalpel.
Paint thinners and an old rag or tshirt.
Some plastic shopping bags.
A face mask! *omit at your own risk.
What you want to do is get a piece of heavy grade paper (heavier than printer paper) something like watercolor paper. Then you draw your lightning bolt on it but don't go too crazy, keep it relatively simple. Using a scalpel or modellers knife carefully cut the design out, what you should have now is a template. You should cut off any unnecessary paper around the template, as if you were cropping an image to get rid of the area you don't need. Try and keep the template roughly rectangular though, it makes things easier.
First wash the area of the frame you're spraying onto with a little soapy water and dry it thoroughly.
Position the template on the part of the frame you want to put the design on and stick it down with masking tape. To avoid removing any paint from the frame first stick the masking tape on your trouser leg or jumper to remove some of its tackiness. You should mask off the surrounding frame with plastic bags wrapped around it and stuck down.
Once you have the template on make sure there is no space between it and the frame. Ideally you would use a airbrush but car spray paints will do the job if used carefully, they rarely keep an even flow of paint though so don't start on a hot day and try to finish on a cold day. Spray a light and even coating of paint on the area from about 20 to 30 cms away, don't feel the need to cover the entire area in one coat or you'll just get streaks and drips which will ruin the effect. Do this outside, no indoors area short of a wind tunnel has good enough ventilation IMHO and no cool paintjob is worth risking your health over. You might need three to four coats to get a uniform covering of paint. Once the paint is almost dry to the touch carefully remove the template, if needs be use a very small amount of thinners to clean up the edges as sometimes the paint might creep under the template.
Once you have the design painted on leave it for at least 24 hours to completely dry then spray the entire area with 2 or 3 coats of clear paint to protect it. If you had an airbrush you could do even cooler stuff like blending but that takes a bit of time and practice to perfect.
Good luck
