transparent

In COLLADA 1.5 Specification, for <transparent> element’s opaque attribute, both “A_ONE” and “A_ZERO” are marked as default.
Is this description correct?

That’s a known bug on page 304 of the 1.5 spec. The default is formally defined in the schema as being A_ONE.

See http://www.khronos.org/bugzilla/show_bug.cgi?id=96

Thanks,
Mark