The amber and the red, we've worn our clash whenever playing a team that wears predminantly red. Such as Soton, Liverpool, Arsenal, Sunderland and Stoke.
As we say here in Oz "saffabecklauder mite" - "A" comes before "H". If we'd become "Allam's Tigers" then we would have been the home side.
The kits don't clash, we use the blue away kit a lot because it's far easier to see at an instant across the pitch at a distance. This probably means we've lost, for a start there's that record that someone uncovered that Arsenal have won the FA cup ever time there's been an all Yorkshire semi final. Now we've been moved from our lucky winning side of the stadium.
Does it necessarily mean the fans change ends? Mind you..."Fixture dates and times may change, subject to TV selections and replays"
If you check Arsenal's club website, you will see that both teams will be wearing their normal Home Kit at the KC on Sunday. I would have thought it will be the same in the Final.