To change color of specific word in List Section Simple Title, you can follow these.
#1. List Section Title
Suppose you need to change color of word “the Team”

First, you need to find List Section ID.
In my example, it is:
section[data-section-id="66fdffe11312fe336b2ab908"]

Next, make text “the Team” underline

Next, use this code to Custom CSS box
section[data-section-id="66fdffe11312fe336b2ab908"] .list-section-title u {
text-decoration: none !important;
color: #f1f;
}

Result

#2. List Section: Item title
Suppose you need to change color of text “Monet”

First, we will need to find List Section ID.
In my example, it is: section[data-section-id=”66fdffe11312fe336b2ab908″]

Next, use this code to Code Injection > Footer
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("h2.list-item-content__title").each(function(){
$(this).html($(this).text());
});
});
</script>

Next, wrap word in <em> </em> tag

Next, use this code to Custom CSS box
h2.list-item-content__title em {
font-style: normal;
color: #f1f;
font-weight: 700;
}
