The Missing Piece

I..
Always..
Have a feeling of loss..
As if I'm lacking something..

I..
Always..
Feels like a certain colour..
Is missing from the world I see..
But..
I have no idea what colour is missing..

And..
The more..
I want to search for the answer..
The further I got away..
Impatience..
Is gnawing at my heart bit by bit..

Can..
Anyone tell me..
What colour am I really missing??