Probably, except I don't know the actual path of the hp bar. I've tried changing
UI\Feedback\HPBarConsole\HPBarConsole.mdx and
UI\Feedback\HPBarConsoleSmall\HPBarConsoleSmall.mdx
but neither change the appearance of the ingame bar, nor actually look the same as it to begin with. Tried replacing them with entirely different models, still no change. Should be no larger issue than changing geoset animations to 0.5 alpha once model is found.