解決方法如下：
如上圖，電腦用著用著，左下角的Cortana小娜搜索欄無端端變成了白色，看著忒難受，找了很多地方都說解決方案是改語言，然后重啟之后改回來。
方法確實是有效，可是過了一小陣子，重新用搜索功能的時候又變成了白色。
1. 將[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\WhiteSearchBox]的Value字段從1改成0 ；
（搜索欄主體已經不是白色，但搜索欄上端邊緣還有一小圈白色。）winwin7.com
2. 將[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderThickness]的Value字段從1改成0。
之后重新啟動Windows資源管理器或電腦即可恢復小娜搜索框顏色
還有一個方法：應對注冊表丟失的問題
1、復制以下藍色代碼到記事本中，然后另存為reg文件；
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0]
"UILanguage"="zh-Hans-CN"
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\CloudAgent_GlobalShell]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\CloudAgent_LaunchApplication]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\CloudAgent_Settings]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\CloudAgent_ShareFile]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\CloudMusic]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\DeviceManagementEnabled]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\ProactivePrefetchIntervalMinutes]
"Value"=dword:000002d0
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\PWILOActivityUploadEnabled]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxAutoSuggestedForegroundColor]
"Value"=dword:ff999999
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderColor]
"Value"=dword:bbffffff
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderColorInDarkMode]
"Value"=dword:bbffffff
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderColorShouldMatchTaskbar]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderColorShouldMatchTaskbarInDarkMode]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderOnlyAtRest]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderOnlyAtRestInDarkMode]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderOnlyOnTop]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderOnlyOnTopInDarkMode]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderThickness]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxBorderThicknessInDarkMode]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxIbeamPointerOnHover]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxText]
"Value"="在這里輸入你要搜索的內容"
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyBackground]
"Value"=dword:00000014
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyBackgroundInDarkMode]
"Value"=dword:00000014
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyForeground]
"Value"=dword:0000003c
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyForegroundHighlight]
"Value"=dword:0000003c
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyForegroundHighlightInDarkMode]
"Value"=dword:0000003c
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyForegroundInDarkMode]
"Value"=dword:0000003c
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyHighlight]
"Value"=dword:0000001e
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyHighlightInDarkMode]
"Value"=dword:0000001e
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyTextLight]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyTextLightHighlight]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyTextLightHighlightInDarkMode]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxTransparencyTextLightInDarkMode]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchBoxUseSearchIconAtRest]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\SearchButtonUseSearchIcon]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\ShowSearchGlyphLeftOfSearchBox]
"Value"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\ShowSubmitButtonRightOfSearchBox]
"Value"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\WhiteSearchBox]
"Value"=dword:00000001
"Feature"="CAC01CT"
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search\Flighting\0\WhiteSearchBoxInDarkMode]
"Value"=dword:00000001
2、雙擊導入注冊表，之后重啟Windows資源管理器即可解決。
Win10小娜搜索框的顏色變成白色怎么辦?不要著急，按上面小編分享的兩個方法操作就可以解決了。