Question about IMG

For any IMG boa breeders out there:

Do you find that an IMG snake’s amount of blackness, as an adult, mirrors that of their IMG parent? (i.e., Does a high-black IMG parent yield high black IMG offspring and a lower black IMG parent yield less black IMG offspring?). I’m interested in IMG and love the look of those all black snakes, especially the IMG Motleys, but I know not all IMG’s have the same blackness as adults. So I’m wondering if the IMG expression of the parent is indicative of how black its IMG offspring will be.

Thanks and happy holidays!