Update 005
By nature, Yue-Bot is programmed to speak in different colors depending on the mood.
Navy blue is Yue-Bot's default communication mode.
Magenta pink is Yue-Bot's happy mode.
Bright red is Yue-Bot's modding or angry mode.
Chances are, if you ever come across a red bot, you have come across a very angry bot who is read to destroy everyone within a six hundred thousand kilometer radius. Noone's safety is guaranteed whenever the Yue-Bot is red.
There is also a normal, black text Yue-Bot who is the embodiment of the human soul locked within the machinery, but we don't speak of that.