Horrible discovery!

I'm doing the thank yous for Christmas and I have a problem. The kids grabbed a parcel and tore it open before I could see who sent it. So, to whoever sent us the jar of bath dye - thank you, the kids love it, blue, yellow, red, now that Bax knows his colours it is just perfect - I'm sorry I don't know who to thank!

And they paint EACHOTHER with it too!