Night Followed by Night - Wait That's Not the Right Sequence

The golden sun flees the sky.    
Succeeded by the cold white moon,    
With blueness turning to black.    
That is the norm: day followed by night.    
   
But lately my depression has become the lens I see things thru.  
So to me the sun at noon looks like the moon.    
Even blue skies appear murky as midnight.    
Night followed by night followed by night, on and on. and on.  
Will this boundless night ever end??  
   
I spend my days spent and in a daze.  
A dayless daze.