Hi,
I believe you could modify that using the css property background-position
If you want to modify it for all select lists in your project I would use the HTML widget with the following:
<style>
.m1-selection-list > li.m1-selected.m1-icon-2{
background-position: 90percentsymbol;
}
</style>
it won’t allow the percent symbol in the forum, so you will have to substitute it above.
If you only want it for a single list you should be able to use the name selector and apply the css to just that one.