I have light grey because light letters on a dark background vibrate and cause eyestrain (for me). So my personal defaults are black lettering on a light grey background which is easier for me to read. Your light green lettering on the light grey is really hard to read, so I highlight them to read them clearly. Not a biggie and may not be a problem for anyone else. But if you are trying to communicate with people, keeping it simple is often the best rule. And your messages stand out as intelligent and insightful without the colorful additions. But that's just me. :)