A very important point Elsa. It is indeed double standards that is the concern. If Crayola have already had similar promotions for other religious festivals then that would be a very positive thing. The article at Mother Jones did not mention that similar promotions existed for other religions. If they had done this it would certainly strengthen their argument by demonstrating double standards of a different kind.
If readers are aware of such promotions then please post any relevant links in the comments. Crayola would deserve positive recognition if they have. An update has been placed in the article to reflect this.