Answer:
The mood would be less affectionate.
Explanation:
Emily Dickinson's poem "Heart, We Will Forget Him" is a poem of four-lined two stanzas, where the speaker talks of love. She wants her heart to forget him so that she will feel better and wants her heart to hurry before she remembers him again.
If the word "warmth" in the poem is changed to "coolness", then the new lines will become-
You may forget the coolness he gave,
I will forget the light.
This new change will affect the affectionate nature of the poet's feelings. The "warmth' gives it a feeling of comfort, relaxation, safety and homely feeling whereas, "coolness" will alter the whole meaning of the poem. Rather than infusing a feeling of comfort and coziness, it will only make the poem feel more negative, like something normal, not out of the ordinary. It makes the love of the poet and the lover seem simple, not affectionate but not lack of feeling either, just dormant and normal.
This change will only make the mood of the poem less affectionate.
