I mean, not necessarily in regards to color. G1 set designers, despite the cool sets they obviously created, I don’t think were necessarily putting the canon implication of element colors in the front of their minds when they designed sets. They made a blue set, and gave it lime green highlights because it looked cool, and that’s how we got Hahli Mahri, not because they found a list of acceptable secondary colors for ga-matoran and chose from that. They even outright broke canon for marketing reasons (stone characters, late 2006 to late 2008).
The discussion around color I think is important because it’s worth knowing just how much of that same freedom that G1 set designers had can be granted to the MOCists and artists.
I’d argue the fact that we even care about the fact that Orde’s colors were mentioned at all means we definitely care more about canon in our design here than G1 designers may have had the freedom to at times…we know that if Orde ever got released as a set in a hypothetical 2013, he would have been given some color pattern the designer found “cool”, and it would have been explained away in canon as “well, he got transformed” if it didn’t match the canon colors that had been previously stated.
I agree that these characters, if their colors were previously stated in a canon source, need to have that. but, if a canon basis can be found to expand beyond that, then awesome, the mocists and artists have another tool in their toolbox. Analyzing where there may be vagueness or gaps is an important step here, because I agree with this: the final design should not break or contradict canon.
We don’t have the power to make Stone gunmetal grey like Hewkii Inika, but maybe we can add some silver, like Onewa Hordika. that kind of scale.
EDIT: That being said: Eljay made a good point earlier about some of these characters setting a precident potentially. That is an extremely strong argument in “not coloring outside the lines”, so to speak, in regards to element color, and it’s something to keep in mind.
I’d also say that the only reason to introduce additional colors is if it makes the moc/art aesthetically better. If you’re gonna make Nidhiki half-pink for no good reason, it’d hopefully get rule 11’d.