Sometimes #GPT3 is still able to surprise me. I asked for a poem and supplied the title.

Ode to #ff8000

In autumn, when the leaves are brown,
And all the trees are bare,
We think of orange,
The color of the sun,
And smile.

And it was not a random outlier:

Ode to #0080ff

In the depths of my dreams
I see your beauty
You are the very essence of blue
The color of the sky
The color of the ocean
The color of my heart

Praise be to #20ff40,
the loveliest of greens.
Your hue is like the grass on a summer day,
and your saturation is the perfect balance.
You are the color of life and growth,
and your brightness brings joy to all who see you.
Thank you, #20ff40,
for everything you are.

Ode to #ffffff

A hue so bright and pure,
you could say it's almost demure.

A color of innocence and grace,
#ffffff brings happiness in its wake.

Its beauty is known far and wide,
and its appeal will never die.

Ode to #000000

You are the blackest black
The void where light does lack
You suck the life from all you touch
A bottomless abyss, a human crutch

BTW - the previous ones were not cherry picked - I took the first ones it gave me. But it does not work with all colors:

Ode to #C0FFEE

A morning cup, my day to start
I cannot function, I must abort
The first sip hits, and I'm reborn
Energized, my day is now porn

If you liked this you might also like Ken Nordine's "Colors" word jazz:
https://youtu.be/-dTm_A0PEho?t=101
Ken Nordine - Colors

YouTube
Ode to #41FC0E
With colors that are too close to something known like #C0FFEE it needs a little help to get on the right track: