I guess you could paint it I would use the fusion paint from krylon.
If you want to get fancy tourbuddy makes a version to fit on the back of the sled on for the 03's which I am wondering if you can fit on the 05 as well that fits in the trunk area and holds 2 gals of gas and on for the 04+ that fits where the tunnel bag would sit and holds 3 or 4 gals and is black looks nice. The nice thing about the tour buddy is the gas automatically goes into the gas tank as the main tank runs low so in essence you have a 13+ gallon tank and never have to take it off the sled and dump it into the main tank. down side is your buddy runs out of gas you gotta syphon instead of lifting off the can.
If you want to get fancy tourbuddy makes a version to fit on the back of the sled on for the 03's which I am wondering if you can fit on the 05 as well that fits in the trunk area and holds 2 gals of gas and on for the 04+ that fits where the tunnel bag would sit and holds 3 or 4 gals and is black looks nice. The nice thing about the tour buddy is the gas automatically goes into the gas tank as the main tank runs low so in essence you have a 13+ gallon tank and never have to take it off the sled and dump it into the main tank. down side is your buddy runs out of gas you gotta syphon instead of lifting off the can.