Trouble: Despicable Me Edition-Why is the 1 red?
Dice produced in Asia usually have the one, and sometimes also the four coloured in red. I've heard a variety of reasons including superstition (no sillier than numbering the 13th room 12A), Emperor's decree or that in some traditional Asian dice games these are special numbers.
The real reason these days is probably just that they have always done it that way.
Regardless, you can probably assume that this dice was sourced from Asia or intended for the Asian market.