I believe the customized checkbox and radio button are done and working. Just need to give them a good theme.

test.html

@@ -71,8 +71,8 @@
 					<label class="checkmark" for="checkbox2">Two II</label>
 					<input type="checkbox" id="checkbox3" checked />
 					<label class="checkmark" for="checkbox3">Three 三</label>
-					<input type="checkbox" id="checkbox4" />
-					<label class="checkmark" for="checkbox4">Four GTA IV</label>
+					<input type="checkbox" id="checkbox4" disabled checked/>
+					<label class="checkmark" for="checkbox4" class="form-control--disabled">Four GTA IV</label>
 				</div>
 			</fieldset>
 			<fieldset>
@@ -86,6 +86,19 @@
 					<label for="radio3">Reverend Father</label>
 				</div>
 			</fieldset>
+			<fieldset>
+				<legend>Radio Button States</legend>
+				<div class="flex">
+					<input type="radio" id="radio99" disabled checked name="Readonly" />
+					<label for="radio99">Readonly One</label>
+					<input type="radio" id="radio98" disabled name="Readonly" />
+					<label for="radio98">Readonly Two</label>
+					<input type="radio" id="radio97" checked name="toggle" />
+					<label for="radio97">Yes</label>
+					<input type="radio" id="radio96" checked name="toggle" />
+					<label for="radio96">No</label>
+				</div>
+			</fieldset>
 		</footer>
 	</div>
 </body>