What to do?

We want to build an invisible track to hang draperies from....in case we ever want to cover up the windows...like in the summertime, etc. any ideas?

We could do panels that would have this effect (although these windows have frost panels, not draperies). We could make have a separate drapery for each window...or...

We could have draperies that slide all the way across the 35' wall...

Or don't have window coverings at all. We did want a wall of window so we can look out at our yard and have true indoor/outdoor living...maybe window coverings would ruin the effect.

I've been trying to find inpiration for what type of finish to put on our fireplace...

Can't decide whether we should dress the fireplace up with some kind of natural stone or whether to paint it a bold color. We want it to be a focal point...so a we might be considering a bright color...any thoughts?