I think the animated Cagali sig is in only 2 colors. That is why it looks like that (i think)
It's quite rare to see someone making sigs of cagali
But you got good taste
I bet it was the dress episode that made you make all those Cagali sigs ^.^
Btw, you should work a bit on your font. The font on 5Cm a second doesn't really fit well with the anime. The font look like some medieval font... And you can work a bit on the blending option/style on text from your other sigs. Plain black is a bit... meh >.<