🤔 [QUESTION] IconImageLayer选中后如何改变icon颜色

### 🐛 Question description [Please make everyone to understand it]
 请问IconImageLayer选中后如何改变icon颜色，尝试了在select中设置color和fillColor都没有效果

### 💻 Link to minimal reproduction

https://codesandbox.io/s/mh8gf8

### 🏞 Expected result

点击图标后变成红色

### 🚑 Any additional [like screenshots]

- **L7Plot Version**:0.5.9
- **Platform**:windows edge
