Shape 256px
|  This is for documents.
The Templates are similarly designed Rather than the page corner in the top right, its in the bottom right. As well the top of the page has a solid color designating it as a template.
| Why? - Primary Context (Application Designation - Red). Secondary Context (Application Brand - Green) - Color, user can identify the file type quickly by color - Enlarged Designation, helps color blind and hard of seeing individuals. - Mime designation, helps users differentiate file type when the above two fail to help, include when screen space permits. - Single gull, or maybe O or circle can satisfy secondary element, less busy yet gets the brand across.
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32px
|  At this level we should still be able to see the branding well as well as identifying the file type quickly
|  At this level we drop the MIME designation, space is limited and mime type becomes less likely to help identify or connect with the user.
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16px
|  At 16px, space is limited, we want to be the lease busiest.
|  Optionally drop the branding to make less busy.
|