Robert,
unfortunately I am unable to give details as I am working on a local install, however I have managed to resolve this I believe by adding this to custom.css file.
So as a forum if anyone else needs to know what to do, add this to custom.css
.blog-post-list .date-event .number {
font-size: 22px;
padding: 10px;
color: #719400; /* change to your desired color */
line-height: 25px;
width: 50px;
margin-bottom: 7px;
border: 2px solid #719400; /* change to your desired border color */
-webkit-border-radius: 100%;
border-radius: 100%;
display: block;
height: 50px;
}
and my change here


