Dustfeather
A mix of the second and third options. I came up with “Dustpaw”, and Glimmer wrote me into a fanfic in which my warrior name ended up being Dustfeather 
She was initially a sort of dull-looking greyish-brown cat with no remarkable features. I felt this resembled me well as I found myself to be pretty boring 
Over time, however, she's ended up becoming a fluffy lilac tabby, and is a lot prettier than I initially imagined; I like to think this marks a positive change in my self-esteem 