If your Foscam camera is showing normal, well-lit footage with a pink or red hue it is usually due to the Infrared lights not turning off. Here are some steps you can take to correct this.
1) Manually turn on/off the IR lights a few times. (This can be done
with either the Foscam App or the camera’s web browser interface.)
2) Power cycle the camera off and on by disconnecting the power connection.
3) Use a strong magnet and make a sweeping motion over the lens of the
camera. This is done in the event the IR-CUT is locked up temporarily
inside of the camera.