Can you give an example?
Text color can be changed. Basically you just add [color=yellow] before and [/color] after in the text in the code. So if you wanted to change a lot of specific text to another color, it might be time consuming. It's possible there's a way to force all or much of the text to a certain color, change the default text colors, or to replace one text color with another across the board, but I haven't tried to figure out how.