Hello there! ^^ I think you had a misunderstanding of what I meant in the Pokémon Boutique ^^;
You see, I have no problems whatsoever that your key stone is placed in your headphones
The problem is I can't make a sprite out of that, as although I'm pretty good at editing sprites that are already there/made, I suck at making completely new sprites, like the headphones ^^; Therefore,
you can have your key stone headphones, but if you want to have a sprite of it, just ask around in the Time Out chat - I'm sure someone will lend a hand
I also realized that the Pokédex is the same thing - Unfortunately we do not have a small, 8-bit sprite of the ORAS Pokédex (nor I can find one; the Googles has failed me again), but you can still have it with the requested recolor
Unless you don't mind that I just recolor the image you gave in your post?