On May 10th, I saw Tokyo Metro 10000 Series whose destination indicator changed to full-colour LED.
Among Tokyo Metro carriages, full-coloured LED had been introduced since 15000 Series on Tozai Line as the destination and operation kind sign on carriage's front and side. Though the sign of 10000 Series' could only indicate orange-, green-, and blue-coloured letters, it changed to the new one, and the font on the sign also did to gothic typeface, the same as 15000 Series, 16000 Series, and 1000 Series, from Ming-style.
From March, 2016, new operation kind on Fukutoshin Line and Tobu Tojo Line, F-Liner and rapid express, appeared and it might become little difficult that people could identify the indication, compared to full-coloured ones.
Though all carriages of 10000 Series don't equip the full-coloured one in the present, it can be assure to increase the set having full-coloured indicators.