A user on Weibo has highlighted a post today featuring a few shots of the Optimus from the 'One Shall Stand' Platinum Edition set - a post from November! While it didn't get much attention at the time, apparently, it's become rather more relevant now with some knowledge of what the redeco is for. Of note here are robot mode images, one of which shows that the clear light blue panels on the arms end up almost disappearing in some situations. Click through to have a look. 
