1. Stephan's mother favourite colours are green and light blue.
2. конкретно про то, как выглядит - ни слова, кроме любимых цветов и бабочек. Про характер - весь третий абзац текста со 147 страницы. Можно выписать вот так: His younger sister Ann ia a curious and talkative 5-year-old girl, sometime she is a bit naughty and she likes butterflies and everything that is pink and purple.
3. His uncle Paul usually wears jeans, pullovers and trainers.
4. His granddad enjoys gardening and a game of ping-pong from time to time.
5. His grandma is a librarian.
6. Stephan's family is very close, they enjoy spending time together.