When changing the property "outline binary", the crosshair is rendered grey in the 2D images. The correct colors are restored if the crosshair is moved afterwards.

To reproduce this bug, simply load a binary image (e.g., binaryImage.nrrd from MITK-data) and activate/deactivate the "outline binary" property a couple of times. During that take a look at the crosshairs in the 2D views. Some of them become grey from time to time, it seems a bit randomly but occures nearly every time you activate/deactivate the "outline binary" property.

This might be related to T16073.