unicode.data: Fix confusing error with unknown unicode char names.
unicode.data: Fix confusing error with unknown unicode char names.

I had `CHAR: green` instead of `COLOR: green` but the caret pointed to
the whitespace and the message was "Invalid character" like there
was some weird unicode code point it was choking on.

mrjbq7/factor,factor/factor,mrjbq7/factor,tgunr/factor,factor/factor,mrjbq7/factor,mrjbq7/factor,tgunr/factor,factor/factor,tgunr/factor,factor/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,tgunr/factor,factor/factor,mrjbq7/factor,factor/factor