Check out the new Icecap Product Lines
Iwasaki Metal Halide Par Lamp - 6.5K Flood 150 Watt:
Available in:
*Flood or SPot version
*6.5K or 20K
*70 Watt, 100 Watt, 150 Watt
• CRI of 96 (with 100 being perfect.)
• UV block lens
• Internal reflector
• Medium Base
•At 8 - 10 hours per day they should last 2 years using [Icecap] 70 or 150-watt electronic ballasts.

IceCap Spot Pendant 70/150 watt:

This pendant is designed to ventilate the bulb's heat upward. The sides would never get more then warm. IMHO, they should've made the pendant to be black on silver.
Look at all those live rocks on the beach at Florida's state park!