How can I use two different font colors on my ecommerce site?

Hi,
I wanted to know if on shopify, there was a possibility to have two different lettering colors.
Here attached I leave the photos of the problem.
As you can see I need on white background the writings to be black, instead on black background the writings to be white.
The site is ILMM.IT and the theme used is Sense but now it shows up with different colors, I copied the theme to do some testing since I wanted to change the style.

I try this two code but they don’t seem to be working:

<style>
div#ImageWithText--template--18106717765936__image-with-text {
    background: black;
}

div#ImageWithText--template--18106717765936__image-with-text> * {
    color: white;
}

div#ImageWithText--template--18106717765936__image-with-text>a {
    background: white;
    color: black !important;
}
div#ImageWithText--template--18106717765936__image-with-text>a:after{
    box-shadow: unset
}
</style>
#ImageWithText--template--18106717765936__image-with-text{
      background: white !important;
      color: black;
}
#ImageWithText--template--18106717765936__image-with-text .button {
    color: white;
    background: black;
}

Can someone help me? :disappointed_face: