I watch Jamesgirl37 on YouTube, if you haven't seen her channel, then check it out:
Anyway, she was talking about using white paper or tissue (or something white) on the block to get a better contrast between dark hair, lace and the block when ventilating. Everyone has always seemed to favour using blue tape. I do find blue tape quite good - especially useful for creating patterns, markings and instructions on the block, which you can remove easily once you are done (as you peel the tape off and just reapply some new to re-cover it). So Jamesgirl's got me thinking about whether I will try using something else... I have cream masking tape, which I could try. I have used paper before, but I find it does not work well for a wig - it's fine for toppers, closures or just practising in small areas. I do sometimes find it hard to see the knots, but I think this is more related to when I have insufficient light. As soon as I aim a bright beam of light onto my work, my eyes seem to see a lot clearer. Anyway, if I do experiement, I will be sure to document it.
Later today, I shall take a picture of an alternative wig cradle solution - to save money - that I have been using and will post that next time I write here.