While only 3 Fudo (aside from Meireki Fudo) were known in those days, it is confirmed that an idea that related the eye colors of Fudo to 'Goshiki' (five colors) mentioned earlier existed.
当時は（明暦不動を別とすれば）三不動しか知られていなかった一方で、前述の「五色」に見立てる発想の存在が確認できる。