Hatch colour doesn't match layer colour

Hi,

In an assembly drawing, there are a few broken section views that I made a detail view of. In one of the detail views the hatch colour (black) doesn't match the layer colour (blue), though the rest of the detail views do.

When I try to change the colour manually to blue, it changes to the chosen colour, but it reverts back to black in a fraction of a second.

SolidworksDrawings And Detailing