I have always loved Obi-Wan's lightsaber. I started creating a replica, but I liked the little accents from other blades, so I added those in the middle. Finally, when creating the textures, I started to like the idea of blue and purple accents - as if the metals were unlike anything we know of here. This is not canon, and there is no reason other than personal aesthetic, but I like it.
Feel free to use this model in any creation you wish. It would be great to get a link back, but that is not necessary. Additionally, while this is a unique take, I doubt there is enough change from the Obi-wan model to qualify for anything outside of personal/editorial use.