Images within support/support directory

Hi,

I had a comment about tests that use images within support/support for
testing. This folder structure is confusing and is quite tricky to
identify on the first scan of the test(atleast the second 'support'
should have a different name). It took me some time to understand
t040304-c64-uri-00-a-g.xht . Also the images within the support/support
directory are  unobvious swatch-red is green and swatch-green is red. 
 
Thanks,
Sudhindra