Issues with new update

Good morning,

I have installed the latest update and experienced several formatting concerns with my free form and custom slides.  I have rectified the issue to the best of my capability, but now I struggle with changing the highlight colour on a multiple-choice question.  I have gone under colours, create new theme colours, and changed control 1, but it is not being applied to the slide.  I changed the colour to a dark blue, but as you can see below it has remained the light blue colour.  Any assistance is greatly appreciated.

Kristen