RTF is a global modification that replaces all towns in the game.

Khorn, for his "chaos theory" mod, created a reskin of the Heroes 5 griffons based on the Heroes 6 texture. In my opinion, it turned out very well in some places.


https://www.moddb.com/mods/homm-5-chaos- ... imagebox

Maybe this texture will be useful to you. Ask him, I think he won't refuse.