When I want to do that with neo master, i load a pic in a buffer, then choose another buffer (empty) . I put the palette in the right order in the empty buffer. the I go back to the pic buffer and use the "jack knife" tool : shortcut "J" , select the logo , go to the buffer with the good palette directly by pressing it's number on the keypad and then press F5 "remap" . and voila pic has the same colours but they are re-arranged :)