Here is a very short color film clip on Facebook I just came across. I'm not sure the link will work but at 31 seconds into the clip Frisco 4309 makes an appearance in full steam in color no less! It's very short so you really have to pay attention. https://www.facebook.com/video.php?v=10158810436036380 I hope the link works.
Patrick and all - from FB page "KANSAS HISTORY GEEKS": "About 1950, my parents T.L. Speck Sr. and Genevieve Speck, were driving north on Highway 169, between SpringHill and Olathe, along MKT Railroad tracks (actually S.L.S.F. - with Katy trackage rights). Dad happened to grab his movie camera and film a short 40-second movie." This was a group post made by Rick Speck, February 2, 2021. Very cool! Bob McKeighan Lenexa, KS