The coloring, which is reportedly visible on the other side of the ballot, in no case clearly reveals the voter's choice and preserves the secrecy of the vote - CEC

The coloring, which is reportedly visible on the other (back) side of the ballot, is generally weak and indistinct, although it may be slightly imprinted, it does not in any case clearly reveal the exact choice made by the voter, which preserves the secrecy of the vote. ...