Colored Items - Guad/NativeUI GitHub Wiki
Since version 1.6 you can create colored items that look like this:
To start, initialize an UIMenuColoredItem
class like you would any other item, adding your normal item color, and it's highlighted color.
var myItem = new UIMenuColoredItem("Start", Color.DarkGreen, Color.Green);
Additionaly, you can define your normal & highlighted text colors:
myItem.TextColor = Color.Red;
myItem.HighlightedTextColor = Color.Yellow;