The pink one is kind and active, more likely suggestive or fooling around at times, more active than Manaka.
The green one is active but tends to tease the player a lot with most interactions. (This is most likely to get for me that I have about enough.)
The orange one is more of a "responsible adult" type that guides would address as kind and warm. Compare to when she is still a friend she has less sad things to talk about, but the contents of her words are just as encouraging.