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Re:The Shapes of CSS by dmvaldman on Saturday May 26, 2012 @11:17AM (#4027459)
There are more benefits:

Costs nothing to change colors. This makes it great for iterating.

No bandwidth costs as CSS is rendered on the client.

Infinitely scalable in size. No rasterization.

Availability of other CSS functionality, like shadows, animation etc

Re:The Shapes of CSS by majormajor on Saturday May 26, 2012 @02:54PM (#4028030)
The last one is an issue, actually. The space invader one is the extreme case: it's already a shadow. And the border tricks for triangles are also shadow-resistant.