THANKS for the warm welcome guys!
...first off you should know that all seven of those Boba Fetts in that particular picture are light blue 'Tri Variants'! (So it's not the lighting!
To 'identify' your Fett, firstly look on the back of it's leg and see what 'Place of Manufacture' it states? = It's the simplist way to confirm it's origins! (Though some early Mexican LL Fetts have 'Made in Hong Kong' on them?