It's just a suggestion, but it might improve the look of checked items to also strike icons:
```
lang=css
.remarkup-checked-item .phui-font-fa::after {
content: '';
background-color: #92969D;
height: 1px;
display: block;
position: relative;
top: -6px;
}
```
This is a little hacky but it works!
Also, shouldn't icons be grey too?
```
lang=css
.remarkup-checked-item .phui-font-fa {
color: #92969D;
}
```