Originally Posted by kiwidude
Yellow is a nasty colour for text I'm afraid unless as you say it is done on a black background, and then it all would start looking like a nasty kaleidoscope.
Sorry guys, blue it is
Black text on a yellow background. That is what Sigil does for warnings
Black text on pale red is for Errors
The text is always black
(And yes, yellow text on white/light color is terrible to see)