I managed to install the game and sign up. I can't read anything in the game, and it's a bit of a menu hell, but eventually I found the 'paint store' in the city hub area.
The model is split into head, torso, legs, arms, two weapons, backpack/wings. Each part has its own texture, and a palette consisting of several groups of color ramps (3 colors). It's easy to change color scheme completely (e.g. all blue parts can be changed to red with a single click).
Later in the game, it appears like you can buy tons of parts and combine as you like. The legs can be tracked, wheeled, quad, biped, squid, etc. There are probably many different torsos, arms, heads, backpacks as well. The city area is full of mechs that people have made, and you'll never see the same thing twice.
The mechs come in 3 sizes, S, M, L.
As for the game, there's a city where you do city stuff, a nearby wild area where you can low level grind. There's also a mission building where you can accept missions. I don't understand anything beyond going to the wild area, attacking enemies until they die. You level up and pick up loot (cash or gadgets).
