At the moment there is no custom ROMs for this particular device.
It does however have an MTK processor which is used in other devices, thus it should be able to port another device's custom ROM to yours. See this thread: Mediatek Porting
. The OP states that it is possible to port ROMs from MT6582 to MT6572
and you should be able to port MT6572 ROMs from other devices to yours even easier. This Device
uses the exact same SoC and should be a good candidate for your first port.
This does require a bit of research and time but is at the moment your only option.