Absolutely. Green bubbles are associated with a subpar, lower grade, poorer quality, which creates doubt and caution in the user's mind when they see it. It's like an asterisk next to the bubble with fine print attached to it.
Quite a brilliant bit of UX design on Apple's part to put SMS/MMS and iMessages in the same exact app and colour them differently to form an instinctual association in the user's mind that 'green bubble bad, blue bubble good'.
It’s worth noting that all messaging used to be green back in the old iOS days. When iMessage was added they made them blue so you knew you were using the new snazzy feature. So to those saying apple picked an intentionally derogatory color are simply misinformed.
