First step. Nokia 5800 (or at least mine...!) will render a 36.36.36 RGB SVG into a 36.31.35 RGB SVG if you "handle as single graphic". So always give a boost of +5 in Green and +1 in Blue to obtain perfect sync.
There's another bug that is Carbide's fault. If you turn a single graphic into multi pieced, color rendering will go all over the place. Good news is that your phone will render THAT graphic correctly, no need to give it +5G +1B.
As soon as I figure out the other bug I will update this post.