Css 如何更改sencha touch 2框架中选择字段的“完成”和“取消”按钮的颜色

//您好，我正在使用sencha touch 2.0框架。我在我的项目中使用了selectfield，我需要更改selectfield的“完成”和“取消”按钮的颜色。但这些选择器按钮在浏览器中不可见，而是出现在android设备中。那么，我如何将颜色应用于这两个按钮呢

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如果可能，也提供一些详细信息和相关帖子

这将覆盖应用程序中所有取消按钮的样式。 在CSS中包含以下内容，并在sencha的CSS之后包含CSS：

/*Cancel Button styles overriding*/
.x-toolbar-dark .x-button, .x-toolbar-dark .x-button.x-button-back::after, .x-toolbar-dark .x-button.x-button-forward::after, .x-toolbar .x-toolbar-dark .x-button, .x-toolbar .x-toolbar-dark .x-button.x-button-back::after, .x-toolbar .x-toolbar-dark .x-button.x-button-forward::after, .x-toolbar-dark .x-field-select .x-component-outer, .x-toolbar-dark .x-field-select .x-component-outer.x-button-back::after, .x-toolbar-dark .x-field-select .x-component-outer.x-button-forward::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-back::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-forward::after, .x-toolbar-dark .x-field-select .x-component-outer::before, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-back::after, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-forward::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-back::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-forward::after { 
    background-color: #303030;
    background-image: none;
}
.x-toolbar-dark .x-button, .x-toolbar .x-toolbar-dark .x-button, .x-toolbar-dark .x-field-select .x-component-outer, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer, .x-toolbar-dark .x-field-select .x-component-outer::before, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before {
    border: 1px solid #000000;
    border-top-color: #000000;
    color: white;
}
.x-toolbar-dark .x-button.x-button-pressing, .x-toolbar-dark .x-button.x-button-pressing::after, .x-toolbar-dark .x-button.x-button-pressed, .x-toolbar-dark .x-button.x-button-pressed::after, .x-toolbar-dark .x-button.x-button-active, .x-toolbar-dark .x-button.x-button-active::after, .x-toolbar .x-toolbar-dark .x-button.x-button-pressing, .x-toolbar .x-toolbar-dark .x-button.x-button-pressing::after, .x-toolbar .x-toolbar-dark .x-button.x-button-pressed, .x-toolbar .x-toolbar-dark .x-button.x-button-pressed::after, .x-toolbar .x-toolbar-dark .x-button.x-button-active, .x-toolbar .x-toolbar-dark .x-button.x-button-active::after, .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressing, .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressing::after, .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressed, .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressed::after, .x-toolbar-dark .x-field-select .x-component-outer.x-button-active, .x-toolbar-dark .x-field-select .x-component-outer.x-button-active::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressing, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressing::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressed, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-pressed::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-active, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer.x-button-active::after, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressing, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressing::after, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressed, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressed::after, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-active, .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-active::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressing, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressing::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressed, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-pressed::after, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-active, .x-toolbar .x-toolbar-dark .x-field-select .x-component-outer::before.x-button-active::after {
    background-color: #383838;
    background-image: none;
}

/*Done Button styles overriding*/
.x-button.x-button-action, .x-button.x-button-action.x-button-back::after, .x-button.x-button-action.x-button-forward::after, .x-toolbar .x-button.x-button-action, .x-toolbar .x-button.x-button-action.x-button-back::after, .x-toolbar .x-button.x-button-action.x-button-forward::after, .x-button.x-button-action-round, .x-button.x-button-action-round.x-button-back::after, .x-button.x-button-action-round.x-button-forward::after, .x-toolbar .x-button.x-button-action-round, .x-toolbar .x-button.x-button-action-round.x-button-back::after, .x-toolbar .x-button.x-button-action-round.x-button-forward::after, .x-button.x-button-action-small, .x-button.x-button-action-small.x-button-back::after, .x-button.x-button-action-small.x-button-forward::after, .x-toolbar .x-button.x-button-action-small, .x-toolbar .x-button.x-button-action-small.x-button-back::after, .x-toolbar .x-button.x-button-action-small.x-button-forward::after {
    background-color: #303030;
    background-image: none;
}
.x-button.x-button-action, .x-toolbar .x-button.x-button-action, .x-button.x-button-action-round, .x-toolbar .x-button.x-button-action-round, .x-button.x-button-action-small, .x-toolbar .x-button.x-button-action-small {
    border: 1px solid #000000;
    border-top-color: #000000;
    color: white;
}
.x-button.x-button-action.x-button-pressing, .x-button.x-button-action.x-button-pressing::after, .x-button.x-button-action.x-button-pressed, .x-button.x-button-action.x-button-pressed::after, .x-button.x-button-action.x-button-active, .x-button.x-button-action.x-button-active::after, .x-toolbar .x-button.x-button-action.x-button-pressing, .x-toolbar .x-button.x-button-action.x-button-pressing::after, .x-toolbar .x-button.x-button-action.x-button-pressed, .x-toolbar .x-button.x-button-action.x-button-pressed::after, .x-toolbar .x-button.x-button-action.x-button-active, .x-toolbar .x-button.x-button-action.x-button-active::after, .x-button.x-button-action-round.x-button-pressing, .x-button.x-button-action-round.x-button-pressing::after, .x-button.x-button-action-round.x-button-pressed, .x-button.x-button-action-round.x-button-pressed::after, .x-button.x-button-action-round.x-button-active, .x-button.x-button-action-round.x-button-active::after, .x-toolbar .x-button.x-button-action-round.x-button-pressing, .x-toolbar .x-button.x-button-action-round.x-button-pressing::after, .x-toolbar .x-button.x-button-action-round.x-button-pressed, .x-toolbar .x-button.x-button-action-round.x-button-pressed::after, .x-toolbar .x-button.x-button-action-round.x-button-active, .x-toolbar .x-button.x-button-action-round.x-button-active::after, .x-button.x-button-action-small.x-button-pressing, .x-button.x-button-action-small.x-button-pressing::after, .x-button.x-button-action-small.x-button-pressed, .x-button.x-button-action-small.x-button-pressed::after, .x-button.x-button-action-small.x-button-active, .x-button.x-button-action-small.x-button-active::after, .x-toolbar .x-button.x-button-action-small.x-button-pressing, .x-toolbar .x-button.x-button-action-small.x-button-pressing::after, .x-toolbar .x-button.x-button-action-small.x-button-pressed, .x-toolbar .x-button.x-button-action-small.x-button-pressed::after, .x-toolbar .x-button.x-button-action-small.x-button-active, .x-toolbar .x-button.x-button-action-small.x-button-active::after {
    background-color: #383838;
    background-image: none;
}

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一般来说，这个问题对于每个寻找合适的CSS选择器的人来说都是很好的。