Yes you can make packs of coloured sequins to sell/give away.
You MAY NOT make a greyscale sequin to sell/give away for others to colour themselves.
Anything you make with the picture tube you can greyscale and sell/giveaway (like my freebie in the previous post) as you are not distributing the picture tube in its original form.
Hope that clears up any questions and if not please use the Contact Me button above and email me. I'm always happy to answer any questions