I added my own styles to change the appearance of the checkbox.
.x-field .x-input-radio:after, .x-field .x-input-radio:checked:after { content: ""; position: absolute; width: 1.25em; height: 1.25em; top: 50%; left: auto; -webkit-transform: rotate(0deg) skew(0deg); -webkit-transform-origin: 50% 50%; -webkit-border-radius: 2em; right: 1.1em; border: .45em solid; margin-top: -0.75em; } .x-field .x-input-radio:checked:after { border-color: #06346a; } .x-field .x-input-radio:after { border-color: #dddddd; }
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