Acceptable Performance/Condition
Unless specified in the Agreement of Purchase and Sale or contract, hinges may be painted.  Paint shall not interfere with the proper operation of the hinges.

Warranty
One-Year listed Work and Materials
Damage resulting from alterations, deletions or additions by the homeowner is excluded from the warranty.
Action
Hinges not meeting the acceptable performance shall be repaired.

Remarks
It is common to paint hinges on bifold doors the same colour as the doorjamb.