How can I apply a glossy black opaque finish (primer, paint, etc.)
to the
surface of tempered glass?  The glass will be exposed to 150 degree
(F) heat periodically.

You want an heat-resistant paint. The best option that I can find is
called Tempra Coat, a licensed product using Duro-O-Lite technology,
originally for ceramics. The paint can be tinted any color and comes
in gloss, semi-gloss, and matte finishes. Brush applied. Water
clean-up.

See:

Duro-O-Lite Web site:
Home
http://www.dur-o-lite.com/index.htm

Tempra Coat
http://www.dur-o-lite.com/products/tempra_coat_paints.htm

News about Duro-O-Lite products
http://www.dur-o-lite.com/news.htm

Online order form
http://www.dur-o-lite.com/order_form.htm

Search terms:
paint "heat resistant coating" glass

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