Ho to replicate illustrator's text highlight?

Question

I'm really new to designing, and im trying to replicate illustrator's text highlight, to my original image. Here is the effect that im trying to replicate: We can see that the 'you' is highlighted, i did this, just by selecting the text in illustrator.

I know you can't highlight text in illustrator, but we can use a rectangle instead. Here is what i tried:

1. Make a rectangle the same size as the one in the picture and place one layer below the text.
2. Change rectangle color to 'E3DFDF'
3. Change opacity to 80%

This is what i got:

I couldn't replicate the same effect, and would like some info on how to produce the same effect.

I'm using illustrator CC.

Answer 1

Place a white box over the top and change the Opacity Mode in the Transparency palette to Difference. The document colour mode needs to be RGB.