Jewelry Boutique

Ok, I go to a school where we have to wear uniform. There are absolutely ridiculous rules about what you can and can't wear, so how do I jazz it up whilst sticking to this AWFUL dress code:

Blazers must be worn all year round (Navy blue)
Blouse is Navy blue and white striped like this http://www.rafcollection.com/images/products/detail/RAFM8122A.jpg
Jumper must be worn (Navy Blue)

Skirts must be below the knee (Even though we roll it up) and must be worn with either black, navy bue or flesh coloured tights.

No jewelry is allowed unless it's of a religious nature and the only coats we can wear are black and must not be fur, denim or leather.

Scarves gloves and hats must be blue or black. Shoes must be black with sensible heel, no sling back, sandals, basically **** shoes.

So, how do I jazz up this mess of a uniform?
Thanks
And the only hair accesories we can wear are blue or black.