What are the badges that Ryou wears?

Question

In Code Geass: Akito the Exiled, the character Ryou wears five colored badges on his outfit.

His article on the Code Geass Wiki says nothing about this. What do these badges signify?

Answer 1

Here are images of the badges that I believe are clearer (taken from blogsuki.com):

So, what do we see?

• A rising Sun, a traditional motif for Japan;
• An 'R';
• A mask with two colored halves, smiling;
• A geometric pattern;
• A yellow-green thing that I do not even know what that is;

Apart from the rising Sun, and maybe the 'R' could stand for Ryou, I do not really have an idea of what these symbols would mean.