These are beautiful!!I've seen tenuis with the same white with blue tips as the Ice Fire. The white with blue tips tenuis was very common years ago.
I had to look past a lot of echinatas before I found one with a lot of white skin.
My current colony........It's hard to show in pics but the blue and white contrast is beautiful and much brighter in person.
My white whale.........Cwards Milli. I kick myself everytime I see these pics as he was giving away chunks of this back when he had his tank running and I never made a point of getting a piece.
Lighting does play a role in how much white you can pull from a coral in reference to the spectrum/intensity as well as how much blue you run. If your'e running one of those all blue view tanks all the white will have a light blue reflection to our eyes and mutes the contrast.