It was. I only hid it out of annoyance after I checked my most recent post and saw it in my collectibles, but with no change to the title itself. And the Configure option disappeared after I input the six digit hex code, so I can't try again.
Edit: I doubt this matters, but I did make the purchase from Kapp'n's Seaside Shack with Seashells, rather than with Bells.
did you include the # before the hex code? if not that might be the problem