Light colored clothing is a completely different animal than dark clothing is. While dark clothing marks you off as a more evil and or powerful person, lighter colors tend to imply pretty much the opposite in the folks who wear them. After all, who comes across as more powerful, Darth Vader or the Easter Bunny? While the Bunny might be able to pelt Vader with lots of eggs (especially those potentially deadly creme eggs), it is still a pretty sure bet that Vader would ultimately win a fight between the two of them. And while the light saber and the ability to use the Force are motivators as well, one of the main reasons for this huge perceived power differential is the colors that they wear.
Consider that Vader always wore black. Do you think he would look even half as intimidating if he were wearing pink or yellow? Of course not! The people he would slaughter would die laughing about how they were about to be crushed by Big Bird, or something. You just do not want to be an intergalactic warlord in light colored clothing.
Now consider that the Easter Bunny (and we are living in an atmosphere in which he does wear clothing on a regular basis) is known to wear pastels most of the time. Granted that we generally only see him pop up during the Spring time, but it is not too difficult to assume that he probably wears a similar color palette for most of the year. Nothing says “I’m not a threat to anybody” quite like pastels do. Even if he were holding an automatic weapon, the Easter Bunny would not have any chance of looking very threatening.