What is Jessie j's hair colour?

Jessie J has blue eyes with hazel specks in pictures with artificial light.

http://lepotta.com/images/2013/02/jessie_j_display_by_marrobsten-.jpg

http://musicmatterstous.files.Wordpress.com/2012/04/jessie-j-who-you-are.jpg

Tumblr

http://www.madaboutmakeup.co.uk/wp-content/uploads/2011/05/jessie.jpg

But, in pictures with natural light she seems to have olive green or dark jade eyes with brown around the pupil.

http://makeupforlife.net/wp-content/uploads/2011/08/jessie-j-makeup-2011-vmas.jpg

http://24.media.Tumblr.com/Tumblr_lzu7g4spIg1qidrf1o1_500.jpg

http://img01.mr-static.com/photo/JessieJ/JessieJ-02-big.jpg