The JLS quiz

My mate wanted me to do a quiz like this..... so hear it is!

1 What is Aston's surname?
2 What colour is Aston in JLS?
3 How many members are there in JLS?
4 What TV program has Marvin been in?
5 What was JLS's first solo no1?
6 What were JLS originally known as?
7 What does Oritse like wearing?