How to Drag and Drop Sprites

I am trying to figure out how to drag and drop GameObjects kind of like an organizing puzzle. While it works, I cannot find a way to shuffle the colors as GameObjects. In all of the tutorials and research I have done, they have to be sprites in order to shuffle. Is there a way to fix this? Here is my code for the Drag and Drop. Does anyone know how I can turn this to sprites?

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class ColorSorter : MonoBehaviour {

 public GameObject RedSquare1, RedSquare2, RedSquare3, RedSquare4, RedSquare5, BlueSquare1,   BlueSquare2, BlueSquare3, BlueSquare4, BlueSquare5, OrangeSquare1, OrangeSquare2, OrangeSquare3, OrangeSquare4, OrangeSquare5, PurpleSquare1, PurpleSquare2, PurpleSquare3, PurpleSquare4, PurpleSquare5, Red, Purple, Blue, Orange;

 Vector2 RedSquare1InitialPos, RedSquare2InitialPos, RedSquare3InitialPos, RedSquare4InitialPos, RedSquare5InitialPos, BlueSquare1InitialPos, BlueSquare2InitialPos, BlueSquare3InitialPos, BlueSquare4InitialPos, BlueSquare5InitialPos, OrangeSquare1InitialPos, OrangeSquare2InitialPos, OrangeSquare3InitialPos, OrangeSquare4InitialPos, OrangeSquare5InitialPos, PurpleSquare1InitialPos, PurpleSquare2InitialPos, PurpleSquare3InitialPos, PurpleSquare4InitialPos, PurpleSquare5InitialPos;

 void Start()
 {
     RedSquare1InitialPos = RedSquare1.transform.position;
     RedSquare2InitialPos = RedSquare2.transform.position;
     RedSquare3InitialPos = RedSquare3.transform.position;
     RedSquare4InitialPos = RedSquare4.transform.position;
     RedSquare5InitialPos = RedSquare5.transform.position;
     BlueSquare1InitialPos = BlueSquare1.transform.position;
     BlueSquare2InitialPos = BlueSquare2.transform.position;
     BlueSquare3InitialPos = BlueSquare3.transform.position;
     BlueSquare4InitialPos = BlueSquare4.transform.position;
     BlueSquare5InitialPos = BlueSquare5.transform.position;
     OrangeSquare1InitialPos = OrangeSquare1.transform.position;
     OrangeSquare2InitialPos = OrangeSquare2.transform.position;
     OrangeSquare3InitialPos = OrangeSquare3.transform.position;
     OrangeSquare4InitialPos = OrangeSquare4.transform.position;
     OrangeSquare5InitialPos = OrangeSquare5.transform.position;
     PurpleSquare1InitialPos = PurpleSquare1.transform.position;
     PurpleSquare2InitialPos = PurpleSquare2.transform.position;
     PurpleSquare3InitialPos = PurpleSquare3.transform.position;
     PurpleSquare4InitialPos = PurpleSquare4.transform.position;
     PurpleSquare5InitialPos = PurpleSquare5.transform.position;
 }

 public void DragRedSquare1()
 {
     RedSquare1.transform.position = Input.mousePosition;
 }

 public void DragRedSquare2()
 {
     RedSquare2.transform.position = Input.mousePosition;
 }

 public void DragRedSquare3()
 {
     RedSquare3.transform.position = Input.mousePosition;
 }

 public void DragRedSquare4()
 {
     RedSquare4.transform.position = Input.mousePosition;
 }

 public void DragRedSquare5()
 {
     RedSquare5.transform.position = Input.mousePosition;
 }

 public void DragBlueSquare1()
 {
     BlueSquare1.transform.position = Input.mousePosition;
 }

 public void DragBlueSquare2()
 {
     BlueSquare2.transform.position = Input.mousePosition;
 }

 public void DragBlueSquare3()
 {
     BlueSquare3.transform.position = Input.mousePosition;
 }

 public void DragBlueSquare4()
 {
     BlueSquare4.transform.position = Input.mousePosition;
 }

 public void DragBlueSquare5()
 {
     BlueSquare5.transform.position = Input.mousePosition;
 }

 public void DragOrangeSquare1()
 {
     OrangeSquare1.transform.position = Input.mousePosition;
 }

 public void DragOrangeSquare2()
 {
     OrangeSquare2.transform.position = Input.mousePosition;
 }

 public void DragOrangeSquare3()
 {
     OrangeSquare3.transform.position = Input.mousePosition;
 }

 public void DragOrangeSquare4()
 {
     OrangeSquare4.transform.position = Input.mousePosition;
 }

 public void DragOrangeSquare5()
 {
     OrangeSquare5.transform.position = Input.mousePosition;
 }

 public void DragPurpleSquare1()
 {
     PurpleSquare1.transform.position = Input.mousePosition;
 }

 public void DragPurpleSquare2()
 {
     PurpleSquare2.transform.position = Input.mousePosition;
 }

 public void DragPurpleSquare3()
 {
     PurpleSquare3.transform.position = Input.mousePosition;
 }

 public void DragPurpleSquare4()
 {
     PurpleSquare4.transform.position = Input.mousePosition;
 }

 public void DragPurpleSquare5()
 {
     PurpleSquare5.transform.position = Input.mousePosition;
 }



 public void DropRedSquare1()
 {
     float Distance = Vector3.Distance(RedSquare1.transform.position, Red.transform.position);
     if(Distance < 400)
     {
         RedSquare1.transform.position = Red.transform.position;
     }
     else
     {
         RedSquare1.transform.position = RedSquare1InitialPos;
     }
 }

  public void DropRedSquare2()
 {
     float Distance = Vector3.Distance(RedSquare2.transform.position, Red.transform.position);
     if(Distance < 400)
     {
         RedSquare2.transform.position = Red.transform.position;
     }
     else
     {
         RedSquare2.transform.position = RedSquare2InitialPos;
     }
 }

  public void DropRedSquare3()
 {
     float Distance = Vector3.Distance(RedSquare3.transform.position, Red.transform.position);
     if(Distance < 400)
     {
         RedSquare3.transform.position = Red.transform.position;
     }
     else
     {
         RedSquare3.transform.position = RedSquare3InitialPos;
     }
 }

  public void DropRedSquare4()
 {
     float Distance = Vector3.Distance(RedSquare4.transform.position, Red.transform.position);
     if(Distance < 400)
     {
         RedSquare4.transform.position = Red.transform.position;
     }
     else
     {
         RedSquare4.transform.position = RedSquare4InitialPos;
     }
 }

  public void DropRedSquare5()
 {
     float Distance = Vector3.Distance(RedSquare5.transform.position, Red.transform.position);
     if(Distance < 400)
     {
         RedSquare5.transform.position = Red.transform.position;
     }
     else
     {
         RedSquare5.transform.position = RedSquare5InitialPos;
     }
 }

     public void DropBlueSquare1()
 {
     float Distance = Vector3.Distance(BlueSquare1.transform.position, Blue.transform.position);
     if(Distance < 400)
     {
         BlueSquare1.transform.position = Blue.transform.position;
     }
     else
     {
         BlueSquare1.transform.position = BlueSquare1InitialPos;
     }
 }

  public void DropBlueSquare2()
 {
     float Distance = Vector3.Distance(BlueSquare2.transform.position, Blue.transform.position);
     if(Distance < 400)
     {
         BlueSquare2.transform.position = Blue.transform.position;
     }
     else
     {
         BlueSquare2.transform.position = BlueSquare2InitialPos;
     }
 }

  public void DropBlueSquare3()
 {
     float Distance = Vector3.Distance(BlueSquare3.transform.position, Blue.transform.position);
     if(Distance < 400)
     {
         BlueSquare3.transform.position = Blue.transform.position;
     }
     else
     {
         BlueSquare3.transform.position = BlueSquare3InitialPos;
     }
 }

  public void DropBlueSquare4()
 {
     float Distance = Vector3.Distance(BlueSquare4.transform.position, Blue.transform.position);
     if(Distance < 400)
     {
         BlueSquare4.transform.position = Blue.transform.position;
     }
     else
     {
         BlueSquare4.transform.position = BlueSquare4InitialPos;
     }
 }

  public void DropBlueSquare5()
 {
     float Distance = Vector3.Distance(BlueSquare5.transform.position, Blue.transform.position);
     if(Distance < 400)
     {
         BlueSquare5.transform.position = Blue.transform.position;
     }
     else
     {
         BlueSquare5.transform.position = BlueSquare5InitialPos;
     }
 }

     public void DropOrangeSquare1()
 {
     float Distance = Vector3.Distance(OrangeSquare1.transform.position, Orange.transform.position);
     if(Distance < 400)
     {
         OrangeSquare1.transform.position = Orange.transform.position;
     }
     else
     {
         OrangeSquare1.transform.position = OrangeSquare1InitialPos;
     }
 }

  public void DropOrangeSquare2()
 {
     float Distance = Vector3.Distance(OrangeSquare2.transform.position, Orange.transform.position);
     if(Distance < 400)
     {
         OrangeSquare2.transform.position = Orange.transform.position;
     }
     else
     {
         OrangeSquare2.transform.position = OrangeSquare2InitialPos;
     }
 }

  public void DropOrangeSquare3()
 {
     float Distance = Vector3.Distance(OrangeSquare3.transform.position, Orange.transform.position);
     if(Distance < 400)
     {
         OrangeSquare3.transform.position = Orange.transform.position;
     }
     else
     {
         OrangeSquare3.transform.position = OrangeSquare3InitialPos;
     }
 }

  public void DropOrangeSquare4()
 {
     float Distance = Vector3.Distance(OrangeSquare4.transform.position, Orange.transform.position);
     if(Distance < 400)
     {
         OrangeSquare4.transform.position = Orange.transform.position;
     }
     else
     {
         OrangeSquare4.transform.position = OrangeSquare4InitialPos;
     }
 }

  public void DropOrangeSquare5()
 {
     float Distance = Vector3.Distance(OrangeSquare5.transform.position, Orange.transform.position);
     if(Distance < 400)
     {
         OrangeSquare5.transform.position = Orange.transform.position;
     }
     else
     {
         OrangeSquare5.transform.position = OrangeSquare5InitialPos;
     }
 }

     public void DropPurpleSquare1()
 {
     float Distance = Vector3.Distance(PurpleSquare1.transform.position, Purple.transform.position);
     if(Distance < 400)
     {
         PurpleSquare1.transform.position = Purple.transform.position;
     }
     else
     {
         PurpleSquare1.transform.position = PurpleSquare1InitialPos;
     }
 }

  public void DropPurpleSquare2()
 {
     float Distance = Vector3.Distance(PurpleSquare2.transform.position, Purple.transform.position);
     if(Distance < 400)
     {
         PurpleSquare2.transform.position = Purple.transform.position;
     }
     else
     {
         PurpleSquare2.transform.position = PurpleSquare2InitialPos;
     }
 }

  public void DropPurpleSquare3()
 {
     float Distance = Vector3.Distance(PurpleSquare3.transform.position, Purple.transform.position);
     if(Distance < 400)
     {
         PurpleSquare3.transform.position = Purple.transform.position;
     }
     else
     {
         PurpleSquare3.transform.position = PurpleSquare3InitialPos;
     }
 }

  public void DropPurpleSquare4()
 {
     float Distance = Vector3.Distance(PurpleSquare4.transform.position, Purple.transform.position);
     if(Distance < 400)
     {
         PurpleSquare4.transform.position = Purple.transform.position;
     }
     else
     {
         PurpleSquare4.transform.position = PurpleSquare4InitialPos;
     }
 }

  public void DropPurpleSquare5()
 {
     float Distance = Vector3.Distance(PurpleSquare5.transform.position, Purple.transform.position);
     if(Distance < 400)
     {
         PurpleSquare5.transform.position = Purple.transform.position;
     }
     else
     {
         PurpleSquare5.transform.position = PurpleSquare5InitialPos;
     }
 }

}