Better visibility for checked options

It is quite hard to see which checkboxes are checked on dark mode (on all websites, not just Quire). We are using quite easy trick, that might work here (of course color can be adjusted), but would require changing structure of HTML:

input:checked + label {
    color: #26c313;
}

<input type="checkbox" name="somename" id="somename">
&nbsp;
<label for="somename">Option label</label>