With double recessive genes, we really start to scratch our heads when we are doing a pairing like this, the advantage is, we will still be able to produce a visual candy (with some luck) with this pairing. When doing pairings like this, it will always take time, but sometimes, when breeding reptiles, this become a marathon not a sprint.
The resulted breeding provides us with:
2 x Normal (MMRR)
4 x het Candy(MmRR)
2 x het Pied (MMRr)
4 x Double het Candy Pied (MmRr)
2 x Candy (mmRR)
2 x Candy het Pied (mmRr)