How do I change the color background for text messages on my HTC M One 8?

[AC Question]

how to change the text message background on my htc m one 8

I just want to add a different color background or a picture or different wallpaper to the text message background on my HTC m one8

 

[Dorothy Alkongga]

i want to change my message backround android kitkat version 4.4.2