I'm stuck in bed today and really want to work on some drafts to pass the time, but... I can't get wif 'n proof to change colours in either my warp or weft. All I get is black when what I want is white and tan. I've checked the manual and I can't find anything there. I've tried clicking on the tricolor bar and that doesn't seem to give me any colour choosing options, I've tapped on the black bar down the left of my screen and get no change and I've tapped on the smaller bar on the right and all I seem to be able to do is change it from black to nothing.
What am I missing?