All Browning Trail Cameras fall into two flash types; standard infrared and invisible infrared. With both types any picture or video taken when the flash is not needed will be in color. Any image or video taken when the flash is needed will be black and white. Typically one might assume that this translates to all images and videos taken during the day being in color, and all take during the night being black and white however there are a few exceptions.
There is a sensor on the front of the trail camera that detects the light level and determines when the flash should or should not be used. It is possible that during the day there can be periods of black and white images and sometimes this can even occur all day. The placement of the trail camera plays a large role in this as if the camera is placed under heavy tree canopy then it is possible that enough light cannot get through the canopy to the sensor on the front of the camera. Weather also plays a role in this as if it is a cloudy or stormy day or period of a day then there may not be enough light for the camera to determine the flash is not needed. Lastly, transitional periods at dusk and dawn when the light level may be at the threshold so the camera chooses may produce these types of images and videos as well.
To ensure that there is nothing wrong with the trail camera a self test can be done by removing the camera from the tree and placing it in full sun. With the camera turned on make a few passes through the detection area and view the images. If they are in color you know the camera is operating as it should.