(Cover) - EN Showbiz - Nicole Kidman became so angry while filming Rabbit Hole that she turned purple with rage.

The pale Australian actress surprised producers and directors in her latest film with her passionate outburst while shooting an emotionally-charged scene with her on-screen husband Howie - played by Aaron Eckhart.

The film tells the story of a happy couple whose life is rocked to the core when their young son dies in a car accident, and is based on a play by David Lindsay-Abaire.

The movies director John Cameron Mitchell revealed that after persuading the usually-contained Nicole to push her emotional limits in the scene, the actress went onto terrify him with her performance in front of the cameras.

When Nicole did that explosion, she was doing more recessive takes that were calmer and like, 'You can't rile me up,' John told E! Online. "I said, 'Nicole, you've got to go further. He is being unreasonable. You cannot be impregnable anymore because he's gone too far. And then she did that take and she turned purple because she's so pale. It was scary And I knew that was the take. Some people thought it might have been too much and we should keep her controlled and I was like, No! She's pushed to that brink.'"

The director also revealed that the 43-year-old actress cant resist a bargain when she sees one.

Even though Nicole and her husband, musician Keith Urban, live a privileged life, the mother-of-three still gets a buzz buying things at a reduced price.

It is an aspect of her down-to-earth personality that highly entertained Nicoles Rabbit Hole director.

"She's very funny," John said. No matter how successful she and her husband are, when we were shooting there, she was like, 'A 30 percent discount!' So she's running around like grabbing things and going, 'This juicer is so reasonable.' She knows a good bargain." (C) Cover Media