Background eraser & mask mode color

[Oodini]

Hello,

I am reading a tutorial about the background eraser, and in this tutorial, on the screenshots, the erased parts are in red. It is the same red than the default one for the mask mode.

Is there a mode to see the mask color instead of what there is beneath the layer ?

Note : Maybe the tutorial author put a red layer beneath the current layer...

Thanks.

 

[Oodini]

I confirm : later, the author explains he usually puts a red layer beneath the active layer.