ok.. instead of re-paint your mobile phone body, a series option is there it will possible with more more sensible mood..
but you should have a high resolution digital camera..
do the following;
> separate the mobile body and its internal parts.
> take some close up shots with your digital camera on external visible part of your mobile phone by side by side.
> then transfer the pictures to USB drive/CD
> then go to Sticker-Maker shop and make a sticker for your pictures of your favorite color.
> The sticker-maker machine (looks like a dot matrix printer) draw the pictures in a colored sticker paper based on your pictures.
> the shop-technician give you the sticker that will reflect your outlines of mobile phone
> Finally stick it side by side.