[quote name='Collectordragon']I could trade you a rare Pokemon like a surfing Pichu from Pokemon Box for it.[/quote]
No, actually, you can't. Surfing Pikachus gotta come from PBR. You can't migrate any pokemon from GBA games that know an HM move.
[quote name='meerkatgamer']I looked on serebii.net and on the item page where the red scarf is listed it in Pastoria City(Leading poke'mon's cool stat must be 200 or more.)[/quote]
I assume this is correct, and not Hearthome. In the past, you had to feed your pokemon pokeblocks (poffins? in this game) to raise their cool/tough/beauty/cute stats for contests. Different berries raised different contest stats. Once you hit a certain amount, you could talk to an NPC who gave you the corresponding scarf.