如何更改QQ聊天窗口的背景颜色？

可以通过自定义聊天壁纸来改变QQ聊天背景颜色。
操作方法：
1.登陆QQ。
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2.点击个人头像。
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3.点击个性装扮。
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4.点击主题。
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5.点击自定义。
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6.右划到聊天界面后点击上传。

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7.之后根据自身喜好选择要自定义的背景即可完成设置。
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在QQ右上角有个更改外形，选择你喜欢的照片或者自定义，选好按确定就ok了，还有，QQ上改了以后，聊天窗口也会改的，除了有些人以外，比如我哥哥和我姐姐。

你好，请在QQ界面上点击小衣服的图标，弹出来的界面中有多种皮肤供你选择，当然你也可以自定义背景。

选择自己喜欢的皮肤之后，我们调一下透明度。

然后就可以看到聊天背景变了。我的是纯色，你可以选择自定义图案。

望采纳

在换肤里边 任选一个背景 然后在最下边一排有个选项 设置全透明 就可以了

QQ聊天窗口背景颜色就是主面板颜色，打开主面板上的一个彩色小框，里面就可以换主题和颜色了。