Let's see...
I was wanting a 'pretty sounding' username, so I thought of a couple things that were... Pretty. ^^;
Finally, I decided I'd have Skye in my name, because it sounded nice, but it wasn't long enough for me, so, I thought of some colors and other adjectives, and came up with Scarlet, a word I like (That means red).
Deciding I liked it, and seeing that it basically, sort of meant Sunset (I was thinking of that name, but decided not to sign up with it, but I figured it wan't really special.), so, I signed up with it.
And, the capital A and L n my name? Oh, that- I wanted it to have my own unique flare. ^^
Also, the no space between the two words? Well, ScArLet Skye just didn't suit me...