Entropy: Some letters are just to unclear, I dotn even know if they should be included or not.
Overlap: We dont know wich pattern to read and if the sign is a I or a 1.
Shape: The symbols next to the line of code should be more clear.
Embross 1: Nice!
Embross 2: Nice!
Composite: Nice idea building the signs with signs.
Stencil: Easy if noone is unlucky enough to read the read and green signs.
Honeycomb: Ordinary one, nothing special about it.
All these feedbacks are given to the testpage you put up
[EDIT] Some of them are totaly unreadable in Heavy version! Especialy Honeycomb[/EDIT]