I like it
Green sets the right 'tone' (genre+setting)/elicits nostalgia, while what's of actual import looks sleeker/modernised enough to do away with what said 'elements' entailed some, say, twenty years back. Easier said than done, but here it is. Said it before in the codex, you really seem to be putting your time and money to good use. Shows potential.
Not as ecstatic about the dialogue box, but again, it appears to tick all the right boxes, so.. and now you'll ask why; partly that we've had a lot of RPGs coming out lately, they all had that centered bottom window for dialogue; partly that it was too generic in my mind even before the recent craze. /meh factor
Nitpicking, but given it's a sci setting, perhaps a window popup style, anchored to the NPC(s) doing the talking would be better.
Again, not to diminish it or anything. End of the day, sometimes 'what is expected' is actually best.
* forgot the most important part, lol. Looks aside, am not sure it's a good idea for the dialogue UI to show you which skill level is tied to each response, a bit too contrived; showing skill alone is one thing, though again debatable. The actual level too? They fail, they can always reload.
** when tired, never start posting.. you want to avoid save scumming / fatigue by excessive reloading am guessing? Fact is though, you're taking some of the fun out of it. It's very close to hand holding, no matter how noble the intentions behind it.