参考 https://forums.zotero.org/discussion/65642/style-with-coloured-in-text-citation

>>>>改成 显示阴影

>>Word for Windows: In Word Options, open “Advanced”, then set “Field shading” to “Never”, “Always”, or “When selected”.
   Word for Mac: Open Word → Preferences → View and set “Field shading” to “Never”, “Always”, or “When selected”.
   LibreOffice: Open Tools → Options → LibreOffice → Application Colors and check/uncheck the “Field shadings” box. You can also control the color used for field shadings

>>>>改成其他颜色的字体，如蓝色blue

Go to Word->Preferences->View and check "Field codes instead of values" (close that window)
-Press Ctrl+H (in word)
-In the replace button type the following without the brackets (^19 ADDIN) you can copy paste what's in the bracket from here anyways
-The next explanation is where the trick lies.
-There is a small "setting" button just besides the Find button with a drop down, Click it and choose Advanced Find and Replace
-In the dialogue box that appears, Select Main Document in the button box written "Highlight all items found in"
-Under the Search option select ALL
-Click Replace button and ENSURE THAT YOU CLICK THE EMPTY TEXT AREA where it is written Replace with: (Do not type anything here!!! Just click it to select it)
-At the bottom where it is written Replace, Select Format
-Then Select Style
-Scroll down to your favorite style (You should have decided before or at least modified the settings of the style you are choosing at this stage before starting all this procedure anyways)
-Choose it and click ok (Do not forget to click OK)
-Then while still under replace,
-(Just to be sure) Click the empty space where it is written Replace with:
- Click Replace all.
-Word SHOULD alert you that it has made some changes. If not Repeat the procedure above carefully!!
-Close the window and undo the field codes. This should give you what you want