Days of Future Past Concept Art.

[X Knight]

I still would have liked Havok's beams being blue.......

maybe in the sequel............

 

[merbass]

Or simply, he is supposed to be Havok, Cyclop and Havok's father and not the brother we assume.

 

[psylockolussus]

I still would have liked Havok's beams being blue.......

maybe in the sequel............

I don't think they would change the color in the sequel. Its not like a costume that you change its color in every movie.