The answers could be anything that includes black or blue, e.g a well known phrase, titles of books, songs, popbands, shops, nicknams, food etc.
1)Black S???? B??????
2)Black W???? T?????
3)P???? Black
4)P???? Black
5)T?? L????? Black E???
6)C????? blue
7)Blue C??? C??????
8)C???????? Blue
9)P?????????? Blue
10)S???????? B???????, S???????? Blue