Question About changing Mms.apk bubbles backgound color

Hi guys, sorry for being lazy but i'd been looking for some answers on the thread for this but no luck. Is their anyone kind enough to teach me where to edit and change the background color of bubbles? The color white behind the sent/ received bubbles in the screen shot. Thanks in advance.
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Samsung Galaxy W GT-I8150 running [KK][4.4.4][KTU84P] CyanogenMod 11.0 (UNOFFICIAL)

What's the point of having a smartphone if you turn off every function that makes it smart?

[THEMED/ CUSTOM][CM11.0]MMS.APK w/ Speech bubbles, Holo, Emoji, Inverted, etc.