All Revolution robots have EZ-Bit connectors so you have a lot of options available with customising it. I believe there is an EZ-Bit connector on the rear of the Roli chassis so yes, the tail connects to it.

There have been no mention of other colours however they can be painted.

hi do you know what for the slot is for

I assume for the cables to go through which go up to any head or camera you attach

I May Be mistaken but i think its a slot to run the wires to the ezb. Also, i believe roli has 3 ezbit slots on the rear. as far as the chest goes, you'd have to cut out a space for the screen or design a body with the space for it and have it 3d printed. as far as colors go, i do think they are all white as of now but some people have 3d printers and we'll see some variety in the forums from that. aameralis (i hope i got that right) has already printed a blue mini six. it looks great IMHO. also im sure you could paint the parts any color you want.

Open Roli in ARC and look at the 3D design of him, it'll show everything you need to know.

Scrap that idea, Roli has been updated since the ARC version from the looks of it.

great.i just found the page for desing your own rolli.but it seems not all bits are on it.

i see only 6 bits.is that normal?

I believe you could dye the plastic pieces if I am not mistaken.