I was quite surprised to learn that the recent update to Design Live (13.7 announced 12/6/23) prohibits users from changing textures of Decorative Items. This is a HUGE setback. What is the logic behind this? Whatever it is — please reconsider. Not helpful.
To others equally frustrated by this: get yourself a link to download 13.6. I struggled to find it online so I called support to request it and received it via email. Whew!