Quick question.  Last week I bought a bag of oranges and they were orange in color & sweet tasting. So delicious!! So this week I decided to buy a box of the oranges.  Sad to say I was disappointed.  The oranges have no real flavor, not as juicy, and are yellow in color. May I ask why this is?  If I leave them in the fridge will they eventually sweeten and improve in flavor or should I return them to store.  
 Thank you for your time and attention
Nancy