Remove color block around a question in an active form

Hi, is there a way to remove the colored block that appears when a person is completing my form?

I've uploaded a screen shot here.

I want to remove the yellow color completely. I also want to make sure that the block is gone so that whatever is left does not bleed into the red border.

EDITED: I found the hex color in my code to change the yellow to white, but the block still bleeds into the red. I can't find the code that dictates block width, so that's where I need your assistance.

To remove the Highlight effect, just go to Preferences, Form Styles tab and then set the Highlight effect as disabled :

Thank you! That fixed my issue.