Modern PES 6 mods allow for deep customisation of a team's look beyond just the jersey: #SomosPECH: New model #Pes6 By Alegor PES 6 Faces

: A specialized program used to open and patch the game's internal files, allowing for deep graphical overhauls. Option Files

Modify the colors of shirts, shorts, and socks for unlicensed teams to better represent their real-world counterparts.

The oldest surviving forum. You won't find direct mega-links here often, but you will find the original creators. Search the "PES 6 Editing" forum for threads titled "[Kits] 2006/07 Pack by [Username]." These artists often release "stadia packs" alongside kit updates.