[css3-background] possibly too late for last call, but: background-opacity?

First time dipping my toe in this list, and appreciate that it's 
probably far too late for last call, but...

One feature I would have really loved to see is the ability to specify 
opacity for background images. I know this is technically possible by 
using formats such as PNG-24 with encoded alpha information, but I could 
envisage an actual CSS property to allow for further flexibility 
(particularly when layering multiple backgrounds, or when wanting to 
change background opacity depending on user interaction or similar).

If it's already too late to suggest anything new like this, could this 
be taken into consideration for a follow-up point release perhaps?

Many thanks,

Patrick
-- 
Patrick H. Lauke
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re·dux (adj.): brought back; returned. used postpositively
[latin : re-, re- + dux, leader; see duke.]

www.splintered.co.uk | www.photographia.co.uk
http://redux.deviantart.com | http://flickr.com/photos/redux/
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Co-lead, Web Standards Project (WaSP) Accessibility Task Force
http://webstandards.org/
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Received on Monday, 12 October 2009 23:58:45 UTC