You're thinking in the right direction Tomas.
BUT there can be 101 blue eyes.
No - My logic started by me assuming the role of a blue eyed person and only seeing 99 blue eyed people in front of me. Therefore the max blue eyed people from my perspective was 100.
You are right that had i assumed the role of a Brown eyed person, i would have seen 100 Blue eyed people and there could have been 101 in total with me, however this does not tell the point at which a blue eyed person realises that they are blue eyed.