Colin Fox in this story is probably the protagonist. He could be a local in a small town where the Christmas story takes place. He might be known for his special relationship with the Christmas traditions in the town, like always being the first to decorate his house or being the one who organizes the Christmas parade every year. Without more information, it's all speculation but he's clearly an important part of this 'a christmas story'.
Since we have so little information about the 'colin in black and white real story', Colin could be anyone. He might be a local figure in a small community whose story is being told, or he could be someone who has had an extraordinary experience that the author wants to share. Maybe he's a historical figure that is being presented in a new light through this 'black and white' story.
Some Burgess characters could be a bit skeptical of the Guardians at first. They might think the Guardians are just stories. But when they actually meet them, they start to have a more hands - on interaction. Like a girl from Burgess who challenges Toothiana to prove she's real by showing her where all the teeth are hidden in Burgess. This leads to a fun and adventurous interaction between them.
Complex themes. For example, in 'A Clockwork Orange', there are themes of good and evil, and the power of conditioning. Vivid characters are also a feature. In 'Earthly Powers', the characters are well - developed and their relationships are intricate.
It's about the Burgess boys. But without reading it in detail, I can't say much more. It might be about their relationships, their family, or their personal growth and struggles.