原文連結

為了保護眼睛，決定把白色背景換掉： 
1 首先，在已經下載好的python檔案目錄下，找到config-highlight.def檔案，我的是在H:\python\python3**\Lib\idlelib**資料夾下。 
2.開啟檔案後，你會看到一些預設的顏色配置，比如經典的顏色配置就是白色背景，一般這個檔案中會有兩種配置可供選擇： 
[IDLE Classic]和 
[IDLE New]，表現在IDLE介面上就是在python shell下，選擇options—configure IDLE—-highlighting選項中，右側的highlighting theme主題選擇，有兩種可選方案，就上檔案中的那兩種。 
3.如果直接在原始檔上修改顏色有些麻煩，除非你特別熟悉顏色。網上有經典的背景配置：

[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 = #2e3436

直接把上面的程式碼copy到剛才開啟的config-highlight.def檔案中，然後重啟shell就可以。 
重啟後，shell會預設選擇原來的。你就在highlighting theme主題中檢視，此時已經多了兩種主題，就是你剛才新增的。 

主題名字為tango.. 
大功告成。。

字型的修改

在setting中，如果你設定的字型是中文字型，再怎麼修改大小也是沒有用的。必須把字型改為英文字型才行。。