Color specification

[Joon Radley]

Hi David, 

> http://www.w3.org/TR/xmlschema-2/#date also indicates that 
> dates should be YYYY-MM-DD (note the added dashes), and 
> datetime should be YYYY-MM-DDThh:mm:ss (where T is litteral).
> 
> (It also says that the time should be followed by a 'Z' for 
> UTC; if we require UTC we can either require the 'Z' or imply it.)

What is the best? DateTime will always be UTC.

> Can we adopt those?
> They are ISO 8601 compliant, and would make my job a bit 
> easier with the RelaxNG schema :)

No objections.

Regards

Joon