Digital BW, The Print

Just a quick note. I've framed Piezo prints only behind plexi at this
point. It's a toss-up, some of the sumptuous surface 
quality is lost, but they definitely pick up apparent density range.
One comment from an experienced viewer was that until 
he looked very closely, and read the description, he assumed they
were silver.
I'd rather the impression was that he assumed they were platinum...
ah well...
Anyway, I've been wondering if the green/cyan cast of glass would be
more detrimental than plexi for Piezo prints. 
Anybody using glass have any impressions of it's effect on hue?
Tyler