We do the same around our home... based on personality or unique features. Pandora is named because she is such a troublemaker; even for a cat. Selune (pronounced Sah Loon Ay) is named after a moon goddess, because her face markings looked like a crescent moon.
For your kitty, not knowing personality, would name her after the "dark goddess" Hecate
or the "night goddess" Nyx
. I have to admit, I love the name Stitches