I was actually talking about Rougarou's coloring the other night with a friend who is of the designer persuasion; she was quite taken with the very adventurous color scheme of Rougarou.
A simple way to illustrate is by using a general diagram of the major ways colors complement and go together. Summon the color wheel!
The simplest color match ups are those that are complementing (opposite sides of the color wheel), square (essentially two complementing colors), and triadic (matching colors at a third interval around the wheel). Think of popular color schemes, such as red and green for christmas or orange and blue. There are deeper delving color schemes that are also shown in this diagram, such as analogous colors that sit right next to each other. (Seattle Seahawks anyone?)
At any rate, Rougarou is jumping all over the color wheel, and is not necessarily following traditional color schemes but going with a more hybrid approach.
Take the Rougarou track for example: Deep Orange and Dark Teal.
Doing a simple color grab in an image editor will get you this type of color match on a color wheel. (Used a simpler colored wheel for better illustration - the positions are correct but the colors aren't perfect) A perfect complementing color for the orange track would be a simple blue or teal, such as what we find on a lot of the Six Flags Goliath coasters.
This teal however is darker, pushing it towards the red part of the color spectrum. This color match up is not a complementing scheme, but it is also not at a third for a triadic or split complementing scheme (that would be a maroon color, similar to Fly the Great Nor Easter's train, track combo)
So we are left with a color combo in the middle of complementing and triadic.
Now on to the trains, there are a number of colors at play across various materials (steel, vinyl, rubber) which accounts for at least 4 different colors. That's a lot to pack in!
Most prominent we have the same dark orange contrasting with a laser lime green. We do however have a deep red and dark green coloring that adds aesthetic along the steel seat backs and trim.
Referencing back to our color wheel guide, these colors are arguably complementing... but also triadic in their relationship. There is also some analogous sliding of colors between orange and the deep red. Another hybrid collection of colors.
Now once the trains are put onto the track, I would imagine an overall split complement of colors. However, we have seen some adventurous Cedar Fair color schemes in the past that while they looked good on paper, had mixed results in real life.
. So it would make sense to install the most up-to-date hardware when doing upgrades.