Red is I think realistic, given the hype particularly around the HTC U11 Solar Red version, which has an effect changing the colour between red and yellow as the light hits it from different directions.
Well that plus the Tweet including red as an option.
Unicorn as they described it, if it were a similar effect to the Solar Red in shifting colour could actually be appealing to some, as something really different. Just personally not to me.
It would seem strange to tweet asking about colours to then offer it up with even less options than the previous generation.
I suspect there has been a rush to get the phone out, and I just hope that there aren't permanent faults or other issues as a result of that.
I like the red one. If they don't release one, I think I will purchase a Midnight Black and cover it in a Karbon red skin! Sweet!
I had a similar thought recently, that more colours for the original Karbon cover would be nice, and surprised that they aren't offering additional covers in the "bumper" version, particularly the Sandstone, which again could have appeal in different colours, though the dirt magnet nature of that surface may well make anything lighter in colour look rather grubby very quickly.