The I Sing in Color OPI Nail Polish, G27, is part of the OPI Gwen Stefani Collection.

OPI I Sing in Color Nail Polish: The deep tones of this luscious blackberry hit all the right notes.

The I Sing in Color OPI Nail Polish is part of the OPI Gwen Stefani Collection. Our I Sing in Color OPI Nail Polish is used at professional nail salons all over the United States. OPI Nail Polish is a professional quality nail polish and is very strong and durable. OPI Nail Polish works wonders on either natural fingernails or acrylic nails.