I love it.

Green sounds like a great suggestion, funnily enough I was actually really hoping there could be a purple version myself :D
It's so... freaking... Adorable!

I was going to as for a request for a green version or gold/silver :) but its up to you

Your blue bot has become VERY popular now-a-days.

Not sure if you thought about making more colors again, you'd definitly pick up even more popularity.
But it's you're model. If this is all you make, then cool on you, it's a very nice model.

If you do however end up making more, just do more basic colors. Or purple.

Keep up the good work bud.
You're doing great.