Your lovely plants remind me of Shore Juniper; there are a couple listed in the database with photos: http://garden.org/plants/searc... and I agree with zencat, if it's just the color changing and not drying branches I'd say it probably has to do weather changes.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!
to All Things Plants!
