There is either a 50% chance of blue eyes or there is NO chance of blue.
As Green is dominant over blue. One has blue/blue and will only give one blue to the child. The other is either Green/Green or Green/blue if Green/Green then child will be Green/blue=Green if Gb then child could be Green/blue= Green or blue/blue=blue
As Green is dominant over blue. One has blue/blue and will only give one blue to the child. The other is either Green/Green or Green/blue if Green/Green then child will be Green/blue=Green if Gb then child could be Green/blue= Green or blue/blue=blue