Yeah by the sounds of it tryin to get hold of a sports grille may become very difficult as several Dealership's i spoke to only have 4 colours available to them now, at just over £40 each
But ring round different Dealerships, as some are more switched on than others... i recommend Sheffield Lexus, the chap there had a hunt round there system and managed to source me a blue one... four other dealerships i spoke to only offered me the "standard" remaining four colours... black, silver, cream, granite.