As far as I'm aware, we can no longer make shapes out of the “nothingness colour” if you know what I mean. I used to use it to erase large areas easily but now I'm forced to use a colour and then fill the colour with with the nothing colour. Seems unnecessary.

Sorry if this has been mentioned but I felt I should post it, as it's been on my mind for ages.
Thanks and keep up the good work.

Yeah, I don't think you can. I wish you could, though.