Here is a good website for examples of the different cere colors for budgies:
http://budgies101.weebly.com/budgie-sex-...
Of the two, the bird in the top picture appears to be male.
I have 2 parakeets. One with a white creamy colored and wrinkly looking cere and one with a light blue and a little bit of white Cere. I'm qm curious cause I came back from school and found an egg on the bottom of the cage. I thought the blue cere guy was male and the creamy colored cere one was female.... I'll add pics and please help me determine their sex