There is one forum I lurk (the
Paradox forums, to be exact) where moderators switch to
colored bold text of their choosing when they want to speak as moderators, as opposed to as forum users. And they have a line in their signature where they explain that, in the same
colored bold text.
I thought it was an interesting way of doing the same persona switch that Ledgem wants to "gift" to the mods without the LAP-, ahem, men-in-black secrecy. Because it's so eye-catching when they do that, they can play around in the "common tongue" with less attention, then switch to
Pay Attention mode when they need to.
Of course, the default color scheme of that forum is considerably darker and the palette of color choices in vB might not be nearly as acceptable in this place with its default bright theme.