Is there a way to "switch" styles in the middle of each trial? For example, I want 4 words to be presented rapidly. I want the first 3 to be presented in a white font, and the the 4th stimulus to be presented in a red font. How do I do this? I tried adding a "style" column before the 4th "stim" column, but this prompted an error saying "missing value in row 3"... Thank you for any help.