Raging Spaniard
If they are Dutch, upright and breathing they are more racist than your favorite player
That's not a significant enough of a colour difference to be functional in gameplay IMO, and it would have been more distinct I feel if there was a difference. Plus the first hit's origin is within Chun's model, so you don't get to see the circle origin of the spark, whereas the particle coming out of it are white in all the cases.
I think we're just getting confused because of the clipping.
I'll have to see the video again, but was the zoom part of the trailer and was there a difference in sound effects? Seeing how some normal attacks were causing guard breaks, maybe those are indications your guard is about to break.