[new feature] SwitchCell: add new props active-color、inactive-color (#1061)

packages/switch-cell/README.md

@@ -67,6 +67,8 @@ Page({
 | loading | 是否为加载状态 |  `Boolean` | `false` |
 | disabled | 是否为禁用状态 |  `Boolean` | `false` |
 | size | 开关尺寸 | `String` | `26px` |
+| active-color | 开关打开时的背景色 | `String` | `#1989fa` |
+| inactive-color | 开关关闭时的背景色 | `String` | `#fff` |
 
 ### Event
 

packages/switch-cell/index.ts

@@ -9,6 +9,8 @@ VantComponent({
     checked: Boolean,
     loading: Boolean,
     disabled: Boolean,
+    activeColor: String,
+    inactiveColor: String,
     size: {
       type: String,
       value: '26px'

packages/switch-cell/index.wxml

@@ -9,6 +9,8 @@
     checked="{{ checked }}"
     loading="{{ loading }}"
     disabled="{{ disabled }}"
+    active-color="{{ activeColor }}"
+    inactive-color="{{ inactiveColor }}"
     custom-class="van-switch-cell__switch"
     bind:change="onChange"
   />