With all this talk of the designs being at an early stage, it seems pretty clear to me what the early stage is - that the designs aren't coloured. After all, there's no way that that silver shiny blackout robot mockup could possibly change into his dull grey/green alt. So here are a couple of quick and dirty colour-ins of the megatron pictures, just to give you some idea of what he MIGHT POSSIBLY look like once they've applied the colour - although i have to say, with bumblebee and prime, it looks like they are sticking quite closely to the G1 colours, so it should follow that megatron, the other 'main' character, would also have similar colouring to G1. Also, as the design for megatron to my mind looks more influenced by the design of galvatron (3 pointed helmet, shoulder jets etc) rather than G1 megatron, here is a galvatron-coloured version too: Not that i'm saying that i like the megatron design any more than the next person! but i hope these help you visualise what he might look like a bit better.