I haven't seen the Mazarra in person but I personally think the color is similar to a 250w Pheonix. Of course the color temp is adjustable so you can get it close to whatever you'd like. I don't think the LEDs are interchangeable and they are full-spectrum with UV LEDs.
We have the Razor Nanos in stock now, come by and check them out. We also still have plenty of 120w and 160w Razors in stock too.
Reef Lighting with an Edge
Built with a aerodynamic body, the R420R LED Lighting System is designed to seamlessly merge into your living area with elegance and style. The R420R LED system utilize the latest in LED technology, including Cree XT-E and XP-E high intensity LED chips distributed in 2 different channels, offering unmatched performance and versatility.
Enhanced Growth and Coloration
The R420R Lighting system is designed to provide all ranges of color spectrum required by corals and plants to enhance their growth rate, improve their coloration and at the same time giving your aquarium the most aesthetically pleasing combination of colors. Available in three different models, the M10000 with 10000K color temperature, M16000 with 16000K color temperature and A8000K with 8000K color temperature the R420r will meet the requirements of even the most sophisticated group of marine, reef and freshwater hobbyists.
410nm/420nm Super Actinic
The R420R Lighting system also utilizes the 410/420nm Super Actinic LED chips, the spectrum that's crucial for the success of any reef and water plant aquariums as it is required by Chlorophyll A for photosynthesis, where absorption peaks at 412nm.
Cooling
The R420R Lighting system deploys an ingenious aerodynamic design which draws cool air from underneath the fixture, through its body which also serves as a large heat sink, to dissipate heat passively.