The colour on the supports are white with a little beige Pearl.It's white/silver...? The blue is just the protective covering.
Ew... I think the blue from the animation would have worked better with the white supports but I guess this fits the theme better.
I reckon it is still getting that theme of a steampunk design like the original concepts. Maybe a futuristic steampunk style
I'm not familiar with the crowd levels at Plopsaland, are 2 trains of 16 riders each likely going to be enough?