Apparently copy/paste mistakes in the
642a252c and
21d4cfe1 commits from 2014; most of
the picture effect type tokens added in that commit do have names that
start with "artistic" but not all.

Does not break any unit test. (Does not fix the bug I am investigating
either, though.)

Change-Id: I2c3bb7243e1feaa3fa949b58d3acf34825d6987b