a color display device of the type wherein the color of {TAIL ~ light} emitted by a phosphor screen is changed in accordance with {HEAD ~ an electron accelerating voltage} applied thereto 
a color display device of the type wherein the color of { TAIL ~ light } emitted by a phosphor screen is changed in accordance with { HEAD ~ an electron accelerating voltage } applied thereto
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH