Basically, in a sci-fi roleplaying group I am apart of, I have began to work on a long-standing human colony world. The tech-level is pretty much bog-standard sci-fi, and such, colonisation is possible and is already widespread.
This planet is known for its fall/autumn tones and colours within its plant life, orange leaves, red leaves, red grass, red forests. Is it possible to have such a world orbiting a k-type star? If not, how could I explain these floral differences while remaining decently habitable?