Requires pulling tag colors from the phone (which itself requires reconciling the color based on whether or not the tag is a general tag), then rendering them in the tag chip. Also took the liberty to switch the tag chip from a ToggleChip base to a SplitToggleChip base, which (1) looks better (i.e. more consistent with the ActivitiesList) and (2) allows multi-taggers to start an activity immediately upon selecting one tag, if desired.