Poor handling of cross-faction guilds.

[It seems there is no handling for cross-faction guilds](https://github.com/FrancescoBorzi/PvPstats/assets/38561765/22fba18b-186a-499c-b99f-dcd0e200d9a3) when displayed. They still hold their faction color. I'd say this red/blue coloring is perfectly fine for players shown on the stats page, but for guilds it doesn't make much sense.

Start by locating the stats-page rendering for guilds and the logic that applies faction colors. Compare guild display behavior with player display behavior; done means cross-faction guilds no longer retain red or blue faction coloring while player colors remain unchanged.

Written by the indexing model from the issue text.