I would guess the answer to both of those questions is 'no'.
Terraria Community Forums
darthmorf
Techhunter_Talon
The forum has been up for a few years. So... doubtful you'd be the first to find that option. 
It's not like the slime secret on this site where you have to put in a button combination to trigger it. Now THAT one wouldn't be surprising if there are precious few people that know about it.
It's not like the slime secret on this site where you have to put in a button combination to trigger it. Now THAT one wouldn't be surprising if there are precious few people that know about it.
Arpiter
If it didn't melt my eyeballs I would probably use it. Otherwise I just stick with a dark one.
Daikonradish
Snow's cool, but I'll make the switch to other themes since it becomes a pain handling with periwinkle text using the theme.
GawenStarTeller
I've noticed that Snow seems to be a popular one. And nah you're not the first one, I've had mine set to Jungle for more than two years now.
Daikonradish
Snow is cool.
Techhunter_Talon
I prefer the Crimson. I like the aesthetic... and I like both of the themes for the Crimson in the game.