Seven Ages of Man Extended Metaphor

Life is a candle,
starting out with a a tiny flare of,
orange
That turned red,
then blue
And near the end,
sprinkle the last spark of bursting crimson before
fading into
Nothing.
Ashes.

In my interpretation of an extended metaphor for life, The whole poem is basically an extended metaphor of the first sentence " Life is a candle" as it develops a comparison oversell several lines of writing. IN this poem, I opened with the line, " Life is a candle" then extended the metaphor to compare the stages of lives to the color of the candles as it progressed. You start out as an infant with only a tiny flare of orange light. This is the stage when life was new and faint in one's body. Then the light of the candle turned red as we mature and the spark of life shined brighter and brighter until we eventually reached blue, the maximum capacity of brightness. In the end before our death, our dwindling light may suddenly relit before fading into nothing but ashes. I compared life to candles in general because we all started out as nothing but a faint glow in the darkness, and as we mature, the light became brighter and brighter. Finally near death, our faded light may lit up again with the last strength in its body before momentally dying.
Just in case my candle metaphor was not entirely correct, I'll supply another example. Life is like a book. You start out with the first chapter then gradually progress your way until you finally finish the book. There are times when you can predict what you'll see and others when you simply will have to be surprised.