The visual change in color allows for easier detection and {HEAD ~ visualization} of {TAIL ~ the growing colonies} 
of
The visual change in color allows for easier detection and { HEAD ~ visualization } of { TAIL ~ the growing colonies }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL