Candles are lit Friday evening for the Sabbath and on the evening of many major holidays. The text is the V'Shomru, a prayer from the Friday evening service, in its entirety on the blue pair.
From the studio catalog, 1995
When Arnold introduced these, the collector Belle Rosenbaum ordered seven pairs to give as wedding gifts. An earlier pair, number 27, carried a seven-branch menorah in gold on a deep blue glaze.