As yet, nobody has been able to officially release the "correct" method of painting the Raptor - so the best we can do for now is to get as close as possible...  Mark S Bilas has one possible solution, which looks pretty good!

The Raptor has a unique paint finish and here's one way of getting close.  The primary colors of a Raptor are two shades of silver for the body and Navy Aggressor Grey (36251) for the edges.  The lighter silver is a mixture of 4 parts Testor's MM Aluminum to 1 part Graphite Metallic (Testor's MM car color).  The darker silver is 3 parts Graphite Metallic to 1 part Aluminum. 

First paint all the edges of the jet.  After several days of drying mask them off. 

Painting the body of the jet - after mixing the colors noted above spray the light silver.  Keep shaking the jar to keep the colors mixed.  Two coats of normally thinned paint to give a rich color.  Immediately after the second coat is dry to the touch start spraying the dark silver.  This paint should be thinned more than the light silver.  Apply as a thin coat that is translucent.   You do not want to cover over the light silver entirely.  Take you time.  Rotate and tilt the model to see the change in intensity of the color.  Remember you can add but not take away!  Keep shaking the jar.  As you spray the thinner in the dark silver re-melts the light silver coat and causes the two to blend better.  Once you are satisfied set the model away to dry thoroughly for a few days.

Take about 1/16 ounce or there about of Testor's MM Acrylic Gloss Clearcoat and add 5 or so drops of Testor's MM acrylic 35237 Navy Blue Grey to tint.  Thin as you would normally and apply several light coats.  This gives the jet some color.  Let dry for a few days.

Apply your decals and remove the mask from the edges.

Finally, apply several coats of your favorite flat finish.  I used Testor's Dullcoat.

The models shown are 1/72 scale F-22A's by Italeri.  The one with the "OT" tail codes doesn't have the tinted clearcoat as the "TY" one.  Looking at the pictures note how the colors appear different based on viewing and lighting angles.  


Article and photos by Mark S Bilas - reproduced courtesy of Aircraft Resource Centre.