Lygodactylus pictus Robust Dwarf Gecko
Some other names for this species:
Painted Dwarf Gecko
Anja Community Reserve, Fianarantsoa province, MadagascarApril 27, 2007
Robust Dwarf Gecko (Lygodactylus pictus)
It's hard to tell these small drab-colored day-active Lygodactylus species apart, but based on general appearance and location I think it's likely that this little guy is Lygodactylus pictus.

Here is a list of all the reptiles and frogs I saw on this trip to Madagascar.

Printed references: