No, they are actually on a dark purple garnet coarse sand. I use it in my fishroom because its very heavy and I don't have to worry about pulling any up with the Python.
cav, put me down also if they spawn in the future. All things aside, what are you feeding them and how often do you perform the water changes on their tank?
I think it's very interesting to see this variant of Festae but I prefer the bright red Equadorian version better....no offense intended. I think the red coloring is the main reason Festae are so popular among aquarists. Like I said though, it is an interesting fish.