Personally, I feel that when people use words in an unusual manner to complete a rhyme it takes away from the poem.
"But I Was Only Four
That Rainbow Seemed To Go
After The Rainy Days
Father Never Seemed To Show"
The never seemed to show line bothered me a bit because the rest of the poem had a significantly different tone, while that line seemed a bit "slangish."
Albiet my regretful personal preferences, I think this poem was powerful, although I think it could have been a bit more powerful with a few word changes here and there. good work.