This is based off the very briefly used gray skinned F-4C the 188th TFG of Arkansas used. In 1988, Arkansas transitioned to the F-16A, but they very briefly painted their F-4C's with they newly adopted gray paint scheme. Also included is the F-4 with 'City of Ft. Smith Arkansas' Painted on it's nose.
Again as always, if you see mistakes, have access to better photos with details I can add please let me know.