How to override plugin that changes theme code

I’ll start with I know enough to be dangerous re: code, css, etc. On our site we installed the Masterslider plugin and it’s disabled/overwritten code that was in the theme. I’m not sure if I’m dealing with CSS or JS. I’ve tried looking and changing everything I could think of. If you look at our site, the four boxes below the slider should be colored. They change colors when you hover, but it’s more of a motion color change which is making me think its JS. What’s really stumping me is when I view the page source, I see the proper color codes there, but it’s showing up white-see below.

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<div class=”sixteen columns”><h2 class=”slogan align-center”>Milend, Inc. Makes the Home Loan Process Simple, Fast and Affordable.
You Do Not Need To Go to Anywhere Else</h2></div>

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<h5>Home Refinance</h5>

<p>Are you looking to refinance your loan to a lower interest rate? Refinancing a mortgage is our specialty!
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