I
love it!
Hoist is one of my
all-time favorite Transformers! One of the few original Autobots I had as a kid, along with Prowl, Ratchet and Sunstreaker. I loved Longarm too. Especially after I removed that screw from his hand that held the cannon on permanently.
As for the colors on Hoist, I agree that the lighter grey isn't the greatest looking. However, like other Transformers we've seen recently, the light grey shown here is used for one of the softer plastics on the toy. I suspect there may be some connection there. Someone should ask Hasbro about it.
A little more orange detailing in robot-mode might have be nice. As for the two tones of green, you'll notice that they're each being used for a specific part of the truck. The brighter/"shinier"/"smoother" green is used for the truck body, while the duller "metallic" green is used for the heavy-duty steel bed.
Anyhoo...