To put that into some context, when I worked on military IR surveillance kit in the late 80's some of the thermal sensors designed for avionics use had a thermal telescope on the end of them - all "optics" machined from germanium, and if memory serves a mildly radioactive coating applied to the interior surfaces. They started at £150K for the smaller ones!
These systems were higher than SD video resolution in the thermal band - basically using highly polished video line synched rotating polygons to project and scan the image onto a fixed SPRITE detector.
False colour seems quite popular in the consumer space, but never really seemed to be of interest for military or avionics. (you have a choice of black hot or white hot, and could adjust the gain and offset (the functional equivalent of contrast and brightness))