I looked for addons and gave up. Screenshots did it.
PC - EU - France - AD
Main character: Qojikrin - Khajiit Sorcerer Tank/Stamina DD - since March 25, 2015.
Guildmaster of Oriflamme: Focus on 4 player endgame content.
Member of Brave Cat Trade, Panda Division and Toadhuggers.
This is the best answer for chat as it overrides the vanilla settings. It also saves chat from logout to login such as swapping characters.
Although I keep the settings set per character instead of using the setting within the addon where you can have one character use the settings from another. My chat bar would randomly stretch across the screen when I used that setting and I have no issues when I do not. I think Joviex was able to transfer settings to my other characters but you would have to check to make sure.