That's so cool! Blue is also my favorite color and I like its meaning.
I believe that Twilight is the same as the blue hour. But it's my first time hearing about Wolf Hour, by the way, that's an awesome name for a while in a day. Gonna be checking on that soon.
I bet having a daily photo challenge with colors as themes is cool!
I like what the color blue symbolizes.
The "Hour of the Wolf" was mentioned in an old Swedish movie directed by Bergman, it's about dusk when most suicides are believed to be, at least in Scandinavia.