When viewing records in mongohub, the ObjectIDs are displayed in uppercase...

"_id": { "$oid" : "50231B4F8BE6E4F1F2E7E24F" }

when viewing in the mongoshell, they are not in uppercase...

"_id" : ObjectId("50231b4f8be6e4f1f2e7e24f")

Altering the case causes unpredictable query results, particularly when using model tree query structures. http://docs.mongodb.org/manual/tutorial/model-tree-structures-with-ancestors-array/

This seems to be something of a display issue in the program so copying and pasting existing records becomes a chore because I then need to change all the upper case letters to lower case. Would you consider making this behavior an option that the user can toggle on and off? I am using an older mongo binary, 2.0.1, so perhaps this has something to do with the case.