Color Section bg needs to be white, but stays grey

I have a color section with (2) 1/2 columns inside it. One 1/2 has text with a css class that makes the bg white and controls size and the other 1/2 is just an image bg with css class to control height.

There is a grey border that is on the sides of both columns (not in between). It seems to be controlled by the color section’s background because I can change the color to anything, except white…when I select white it defaults to grey…I can’t find any settings that would designate that.

Please help!