Ok to do this first you need to copy all chat files. You can do this by Clicking Play and Copying every file from Chat.

Then click Stop and paste all that files into Chat. Now go into BubbleChat script and do this:
- After line 198. paste this
chatBubbleMain.ImageColor3 = Color3.fromRGB(0,0,0)
- After line 211. paste this
chatBubbleTail.ImageColor3 = Color3.fromRGB(0,0,0)
(this will make background black)
- After line 425. paste this
bubbleText.TextColor3 = Color3.new(1,1,1)
(this will make text white)
Hope this helps! 
Also in studio chat sometimes doesnt load, but it will work in game.
