[new feature] ActionSheet: add color option (#4073)

src/action-sheet/test/__snapshots__/index.spec.js.snap

@@ -12,6 +12,12 @@ exports[`callback events 1`] = `
 </div>
 `;
 
+exports[`color option 1`] = `
+<div class="van-popup van-popup--bottom van-action-sheet" name="van-popup-slide-bottom">
+  <div class="van-action-sheet__item van-hairline--top" style="color: red;"><span class="van-action-sheet__name">Option</span></div>
+</div>
+`;
+
 exports[`disable lazy-render 1`] = `
 <div class="van-popup van-popup--bottom van-action-sheet" style="display: none;" name="van-popup-slide-bottom">
   <div class="van-action-sheet__item van-hairline--top"><span class="van-action-sheet__name">Option</span></div>

src/action-sheet/test/index.spec.js

@@ -151,3 +151,14 @@ test('round prop', () => {
 
   expect(wrapper).toMatchSnapshot();
 });
+
+test('color option', () => {
+  const wrapper = mount(ActionSheet, {
+    propsData: {
+      value: true,
+      actions: [{ name: 'Option', color: 'red' }]
+    }
+  });
+
+  expect(wrapper).toMatchSnapshot();
+});