There's too little space in terms of pixels in the face to actually have room for that kind of eyes.
That is, if you don't want potato-man eyes or anime-eyes. (actually, there IS room, but:)
I really liked the eyes as they were before, when they were overshadowed by his brow area and just a glimmer escaped. It made him feel manly but still made him a bit cute (which, ironically, colossus should be)
Also, tremendous improvement, I think you should call it done soon and move on to other things! You're pretty good at this pixelling thing you know! ((: