The only way I can best imagine the ship looking that night is to google images of cruise ships at night and see their lights glowing on the sea around them. That would be my best guess to describe the Titanic that night when she listed over to port and pointed her lights down at the sea.
Here are a few photos to compare:
Here's an article of the Titanic's lights at night, which includes pictures of the Titanic herself at Cherbourg:
Here's a snippet I took from the same article of Charlotte Collyer's description of the Titanic's lights:
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