i just copied the ones from the stock message app in ifile
idk much about code but i went through the list of icons in bite sms and wrote down the file names and what sizes.. then went to the stock sms icons and matched up the sizes and chnaged the file name that would correspond to the bite sms icon and copy and paste it to bite sms, then hit overwrite. then i went back and changed all the stock file names to their original
im sure someone who is more accustomed to code can figure out a better way to do this but it worked for me