YAD "Titles" do not seem to support Pango Markup.

Is there a way to change "--TITLE" text fonts and colors in YAD?  I am using YAD 14.1 but Pango Markup  just seems to be ignored and is printed as part of the title text rather than interpreted and applied to the TITLE text.  Am I missing something?  Is there another way of doing this that isn't complicated?