No they are poisonous

You can boil them up and use the juice as a dye but be careful no one tries to taste them as they are poisonous so use a pan you do not use for cooking. Ormake sure it is spotless before using it again. The dye will stain anything it comes in contact with.

Depending which laurel you're talking about - on spotted laurel, those berries will be bright red by Christmas time, great for cutting and bringing into the house as decoration - unless you mean Prunus, just plain dark green leaves, they don't go red.

I was thinking of Prunus laurocerasus, which has black berries which give a purple dye.