From the Super Mario Wiki
Gramma Red and Gramma Green are a pair of old salesperson Toads seen in Mario & Luigi: Partners in Time. They run the item store "Gramma's Place".
Very much like Mario and Luigi themselves, the grandmothers wear red and green. They are the only people who remain in Toad Town after the Shroob invasion, and constantly remind Mario and his team of their loneliness as a way to get them to buy more. Their slogan is "more is better."
Names in Other Languages
||Abuela Roja y Abuela Verde
||Red Grandmother and Green Grandmother