Remove some depth of typescript interface

gistfile1.ts

interface T1 {
   name: string;
   email: string;
   properties: {
      creators: [{
         name: string;
      }];
      color: string;
   }
}

type Overwrite<T, U> = { [P in Exclude<keyof T, keyof U>]: T[P] } & U;
type T7 = Omit<T1, "properties"> & { properties: Omit<T1["properties"], "creators"> };
type T8 = Overwrite<T1,{properties: {color: string}}>;