>>56106013Torkoal was classified as green too, until late enough that its final party sprite in Gen3 was never changed into its proper orange color.
It is possible that at some point they decided to make Kaen a bright orange and Torkoal of a duller, green-leaning hue (this is a pretty common color scheme in evolutions, often times babies have more saturated colors than their evolutions).
Then, Kaen was axed very late in development and Torkoal was recolored with a more saturated orange hue, possibly similar to Kaen's.
Kaen and Torkoal were never revealed before release, afaik, so really whether this is real or not, at least when it comes to Kaen, is up to complete speculation because the only information we have is that in the July build both Kaen and Torkoal were classified as green.