I can't get clipping mask to work

Question

I'm adding stars to the sky.  I did this by making a custom brush and painting on a blank layer above my image layer.  To make it look more realistic I want to add a bit of color.  So I add a Hue/Saturation adjustment layer and colorize to get the desired hue.  This is where I run into trouble.  I only want the adjustment layer to affect the stars I painted on and not the rest of the image so I apply a clipping mask to the Hue/Saturation layer (which is directly above my stars layer.)  When I do this the color disappears completely and does not affect any part of the image.  Any ideas why this isn't working?  I also had the same problem when I applied a Brightness/Contrast adjustment layer.  I have Photoshop CC (same issue is present in both the 2014 and previous versions) for Mac.

Answer 1

This is my desired end effect.  I worked around it by creating a layer mask from the stars layer but the clipping mask not working is still an issue.
I created new Hue/Saturation layers and put them above the stars layer.  The adjustment layer changes the color of the entire image including the stars. 
Once I clip the layers none of the image is affected, not even the stars, when it should be affecting only the stars.