Changing the background of some parts of the text?(winform)

Question

i wanna write a program in which by moving the mouse over a chunk of text the color of the background to be changed to black (or other color does not matter) and if the highlighted (black) part of text got clicked again it get turns into another color and the label text to be changed arbitrarily.I am using this control richtextbox. But my idea is to use webbrowser control,What do you think a better idea?

 

for example: 

http://tanzil.net/#trans/en.sahih/2:276