Look here: https://simpearls.co.uk/simpearls/index.php?topic=8707.msg58877;topicseen#new
(One of your older threads on the same topic).
That's about as good as it gets. Decals are a no-go because the texture is mirrored in 3 directions and stretched in all the wrong places.
I still have the textures if you're interested, but I'm not sure if it would have to be a default replacement or if the ice is recolorable.

