Au contraire - there were gray and white Panthers in ATU-206 and VMA-223 for two. Colorful too. Detail and Scale is one reference. I don’t know if there are any 1/48th decals for these or any others.
There were also some natural metal Panthers and at least two half and halfs. The “Blue-tailed Fly” had a GSB rear and a NM front. There was also one vice versa. Don’t know off hand if they were -2 or -5s.