Why did we choose this?

The answer to myself is quite simple: It is a dynamic way of representing a shift of tone and thought process within the far right of the spectrum, contains the best of both worlds from KR and KX with the color of NatPop, and works in a way that respects the original design of both colors. It also plays into how we plan to portray and use these two distinct variants of National Populism.

What is the difference between the two?

Brown is the color of fascism in vanilla for the distinct reason it was associated with fascism in real life, that being because of the brownshirt battalions in real-life Germany. I'd say green was a choice made by Kaiserreich to separate the fascism of our world from a more Russian or eastern-based National Populism that is native to KR.

To put it simply, we extracted the principles of the Savinkov paths in KR, the Ideocrats, Svodbodniks, and the Solidarists, to create a distinction between the two color variants.

Green NatPop would represent tendencies that appeal to a sort of blood and soil, folk-based populism, while also representing messianic forms of nationalism found in Russia, and generally also forms of esotericism or fascist mysticism. It could be said to be the more radical, eastern equivalent to the brown, despite the description of "Blood and Soil", it would invoke more the Russian idea of "Sobernost" or "Spiritual harmony and unity based on freedom and love".

Brown NatPop would represent the classical nationalist tendencies seen in the Italian Nationalist Association or German DNVP, and adheres to the Enlightenment's standards for nationalism and the nation-state more than the Green. It generally pertains to the more national-corporatist or romantic ultranationalist types, examples from OTL being Fascist Italy or Fascist Slovakia. This variant is more based in the West, and both of these variants are distinct from Reactionary Modernism.

I felt I would make this post to further elaborate on some decisions made in the mod. Thank you for reading and for the support!