Spell special effects

It would make sense they are they same since items are basically magic spells. No idea why the tables are reversed, though

Have a look at Sketch, listed as effect $55. In the code, Sketch is $AA. $FF minus $55 is $AA.

Code:

C2/1527: A9 AA        LDA #$AA
C2/1529: 8D A9 11     STA $11A9      (Store Sketch in special effect)