Hey Dlaporte, in your toolbox, if you double click on either of the colors in the "Foreground/Background" icon, a window will appear called "Change Foreground/Background Color". In this window on the right side you will see 6 color spectrums. The third down (from the top) has a "V" (Value) in front of it, and ranges from black to white. To the right of this is a field for changing the value. Change the value to 50, and then apply that to your layer.