Someone asked me if I would post a picture of my dad's t-shirt once it arrived, so here it is, front and back. (And you can see our YELLOW walls a little in the background, which were part of the cause of the yellow cast on those photos I posted of my kids too!)
It may be hard to tell from the pictures, but it turned out really well. DH and I were so pleased with the result! We ordered it from Wordans, which I thought was a Canadian company, but the insert they mailed with the t-shirt said they are an international company.