Obi-Wan's eyes

Why: I really don’t know how this happened, but in various scenes Obi-Wan’s eyes change from blue to a darker color. I know this seems a bit picky, but I found it really distracting and confusing while watching the movie. It’s like you’re looking at Obi-Wan, but not looking at Obi-Wan at the same time. Also, if you notice in the two pictures below, besides his eyes being a different color, his hair and beard are different too…and both shots are in the same scene.

How: Change Obi-Wan’s eye color with CGI in the scenes where his eyes look too dark. The ones that really stand out for me are:

• Obi-Wan leaving for Utapau 
• The fight over the lava