为了保护眼睛，决定把白色背景换掉：

1 首先，在已经下载好的Python文件目录下，找到config-highlight.def文件，我的是在H:\python\python3**\Lib\idlelib**文件夹下。

2.打开文件后，你会看到一些默认的颜色配置，比如经典的颜色配置就是白色背景，一般这个文件中会有两种配置可供选择：

[IDLE Classic]和

[IDLE New]，表现在IDLE界面上就是在python shell下，选择options—configure IDLE—-highlighting选项中，右侧的highlighting theme主题选择，有两种可选方案，就上文件中的那两种。

3.如果直接在源文件上修改颜色有些麻烦，除非你特别熟悉颜色。网上有经典的背景配置：

[Obsidian]

definition-foreground = #678CB1

error-foreground = #FF0000

string-background = #293134

keyword-foreground = #93C763

normal-foreground = #E0E2E4

comment-background = #293134

hit-foreground = #E0E2E4

builtin-background = #293134

stdout-foreground = #678CB1

cursor-foreground = #E0E2E4

break-background = #293134

comment-foreground = #66747B

hilite-background = #2F393C

hilite-foreground = #E0E2E4

definition-background = #293134

stderr-background = #293134

hit-background = #000000

console-foreground = #E0E2E4

normal-background = #293134

builtin-foreground = #E0E2E4

stdout-background = #293134

console-background = #293134

stderr-foreground = #FB0000

keyword-background = #293134

string-foreground = #EC7600

break-foreground = #E0E2E4

error-background = #293134

[tango]

definition-foreground = #fce94f

error-foreground = #fa8072

string-background = #2e3436

keyword-foreground = #8cc4ff

normal-foreground = #ffffff

comment-background = #2e3436

hit-foreground = #ffffff

break-foreground = #000000

builtin-background = #2e3436

stdout-foreground = #eeeeec

cursor-foreground = #fce94f

hit-background = #2e3436

comment-foreground = #73d216

hilite-background = #edd400

definition-background = #2e3436

stderr-background = #2e3436

break-background = #2e3436

console-foreground = #87ceeb

normal-background = #2e3436

builtin-foreground = #ad7fa8

stdout-background = #2e3436

console-background = #2e3436

stderr-foreground = #ff3e40

keyword-background = #2e3436

string-foreground = #e9b96e

hilite-foreground = #2e3436

error-background = #2e34361

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直接把上面的代码copy到刚才打开的config-highlight.def文件中，然后重启shell就可以。

重启后，shell会默认选择原来的。你就在highlighting theme主题中查看，此时已经多了两种主题，就是你刚才添加的。

主题名字为tango..

大功告成。。

字体的修改

在setting中，如果你设置的字体是中文字体，再怎么修改大小也是没有用的。必须把字体改为英文字体才行。。