func NewService(repo Repository) Service {
	return &userService{
		userRepo: repo,
	}
}
NewService returns a new userService
package users
import (
	errs "github.com/bnelz/gokit-base/errors"
)
type Service interface {
	CreateUser(id int, fname string, lname string, color string) (int, error)
	ReadUser(id int) (User, error)
	UpdateUserColor(id int, color string) error
	Users() []*User
}
type userService struct {
	userRepo Repository
}