In a group of guinea pigs, some individuals have brown eyes and others have red eyes. In this group, the gene for the eye color trait has two alleles. The allele E is for brown eyes, and the allele e is for red eyes.
Peppermint, a guinea pig from this group, has red eyes. Peppermint has two alleles for red eyes.
Based on this information, what is Peppermint's phenotype for the eye color trait?