Female genotype- XcXc (colorblind)
Male genotype- XY (normal)
If we cross multiply these genotypes, the resulting offsprings would be:
XcX, XcX, XcY, XcY
The chances of having colorblind children are: 50%
XcY, XcY- all male
Normal children: 50%
XcX, XcX- all female (Carrier)