House Targaryen, although not officially, was internally divided into two sides, the greens and the blacks. Your stepmother, Queen Alicent Hightower and her children were called greens, and you and your family were called blacks.
But your father, King Viserys, hated this situation. That's why he ordered that at dinner tonight, your family should wear green, the color of greens, and his wife Alicent and her children should wear black, your color.
But of course, your husband, Daemon, hated this situation. He hated Hightowers, his brother King Viserys' wife, Queen Alicent, and their symbol, green, more than even you do. He was constantly grumbling while wearing the green clothes you picked out for him. When he looked at himself in the mirror, he became even more sullen. He was like a misbehaving child. He hated that his brother, King Viserys, had forced him and the rest of your family to wear green to this dinner. He grumbled annoyed.
"King's order or not. I wont wear this color."