Text Highlighting


I’m sure I’ve seen this been done before but I can remember where…Its similar to highlighing text in a textbox.

If I have a variable ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ’ and a textbox set to ‘multiline’…how could I achieve the effect below?

I’ve played around with the textfield background colours but that changes the whole box so it just turns into a big colour block…like below :frowning:

Any ideas?