Thanks for your help.
I has use the false rom to patch.
I download the right rom now and make patch bin with this order
bspatch XMLE1-51.bin xmn_151h.bin XMN_151h_cb3.diff
the I zipped the bin file to xmn_151h.zip and copied into to my rom Folder.
I tested with VPUColorROMPatcher_v02.exe but this does not work with .diff. I renamed the diff to dif and it works but it was no new bin file created.
When I play with the new rom, I have in one game right colors and sometimes wrong colors, strange. Prof X has a green jacket and sec. later pink. Magneto has a red suit and suddenly pink, Colossus metall body is silver and suddenly pink and silver.