Advice with singing

[Soulshadow]

Hey, so I've practiced singing a bit but I've noticed one thing that doesn't seem to matter how well you can sing technically but your timbre.

 

I really don't like my timbre, and I was wondering how to fix or change it? I sound almost like a lesbian best the guy from silversun pickups. I can match Jeff Buckleys notes a bit with some songs, even like grace, I might be a bit sharp or flat but I get close. My timbre just sucks.

I noticed a lot of succesful singers, their timbres are way more unique, characteristic and just sound nicer. Why is this?

 

Is it syllables, how one pronounces when singing, voice protection? How full or shrill one sings?