Bolds text that is being read

You can no follow along with Hark, as it bolds the text that is being read.  When the synthesizer stops, all attributes from the string are reset to the default font size and weight (17.0 seemed to be the exact font size).
Makes "NO" less aggressive

May seem silly, but the all caps NO seemed kinda aggressive :).
changed to highlighting the text as it is spoken with the tint color