Have tried all these things. The problem seems to arise when putting the the words 'normal' and 'dotm' together. Even simply changing the dotx to dotm file extension causes the problem. So even if I have a normal.dotx template (which displays as I want it to) and change it to normal.dotm then the paper colour displays 'wrong' according to the Windows setting. It seems that normal.dotx obeys Windows but normal.dotm does not.