In
our minds
we all have
light and shadow.
Subtle shades of gray
are characteristic
of certain traits while darkness
will manifest itself also.
Ultimately it is the contrast
that highlights the presence of light in us.

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*According to Wikipedia, grey is the British, Canadian, Australian, Irish, New Zealand and South African spelling, although gray remained in common usage in the UK until the second half of the 20th century.  Gray has been the preferred American spelling since approximately 1825, although grey is an accepted variant.