Look at this game http://www.vdiplomacy.com/board.php?
gameID=4091#gamePanel. The current turn (A1910) shows the old armies, the previous turn (S1910) shows the "shiny" armies and all the previous turns are the old ones.
Also this one http://www.vdiplomacy.com/board.php?
gameID=4345#gamePanel.
A2001, A2000, A1995, S1995 and A1994 are "shiny" others turns are old.
And this one http://www.vdiplomacy.com/board.php?
gameID=4930#gamePanel.
A1872 and A1871 are shiny.