I am missing the references to "wrong spelling" hints but I have gone this way.
Allowing the seventh colour to be purple (instead of violet) gives the end of the spectrum as "E"
Adding roman 10 "X", and "IT" on the end and you have a really "way out" problem.
Now if I could just add the personal pronoun bit . . .
oops . . . moment of inspiration as I write. Other end of purple gives "P". "IO" for ten. "US" for the our personal pronoun and a most religous solution.