Re: Let's switch ponies?
The problem is that a pony will be displayed on the green pastures not until 4 - 6 hours after releasing the pony from your stables. If two players have their homes in different time zones as well it is nearly impossible to swap ponies with each other at all.
Pure indigos are a relict from Poneyvallée V1.0 and are only interesting for players who started the game after V2.0 was released (which happened in may 2012). Same goes for pure red, pure yellow, pure green and pure magenta. :)
"Dimmi, mente amantissima mia..." ~ Leonardo da Vinci