In Short Film Frozen Fever, in the start Elsa makes both of there costume green by her magic  :

[![enter image description here][1]][1]

In previous film after excepting her powers Elsa make herself blue costume from her magic during let it go song:

[![enter image description here][2]][2]

And stay with that costume till mentioned Frozen Fever scene.

So what was the reason of blue to green transition of costume colour in Frozen Fever? Is there any deep significance of colour scheme transitioning or it's just to make new toyline? [1]: https://i.sstatic.net/vTfPp.jpg [2]: https://i.sstatic.net/ZvDhe.png

In the start of the short film Frozen Fever Elsa makes both of their costumes green by her magic:

In the previous film after excepting her powers Elsa makes herself a blue costume from her magic during the song "Let It Go":

And she stays with that costume till the mentioned Frozen Fever scene.

So what was the reason for the blue to green transition of costume colour in Frozen Fever? Is there any deep significance to the colour scheme transitioning or is it just to make a new toyline?