hi, yes for this one i extracted the palette from Surt’s town tiles, i think that was something like 14 colors? i am pretty sure i used all of them, but if you want to be extra sure you got the full palette i think the best idea is to again extract it from the original “town tiles” png file.
these sprites should match up pretty well with Surt’s tiles without doing extra work, you can see some examples here
but yeah you might want to add more sprites/ tiles depending on what your game idea is, good luck!! :)))