how is the prince of wales described in the scarlet pimpernel book

He is totally decked out in finery at the ball,

"The Prince of Wales, dressed in a magnificent court suit of salmon-coloured velvet richly embroidered with gold, entered with Marguerite Blakeney on his arm; and on his left Sir Percy, in gorgeous shimmering cream satin, cut in the extravagant "Incroyable" style, his fair hair free from powder, priceless lace at his neck and wrists, and the flat chapeau-bras under his arm."

He is also quite condescending,

Monsieur," said His Royal Highness coldly, "we will try to forget the government that sent you, and look upon you merely as our guest--a private gentleman from France. As such you are welcome, Monsieur."