How to change the active tab header’s color in IntelliJ 14.1.4?

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  • Please note that this setting has worked for IntelliJ 14 back then, but is no longer applicable for newer versions
  • Find the comments below for plugins as a great alternative (Material Theme UI, Active IntelliJ Tab Highlighter)

Although, if you are still using IntelliJ 14:

Under File \ Settings \ Appearance & Behavior \ File Colors,

turn off “Use in Editor Tabs”, as test tabs background are
dark-green by default, which is similar to the dark-grey non-selected
tabs.

After that, optionally you can set the colors under:

File \ Settings \ Editor \ Colors & Fonts \ File Status

and change the Foreground color of “Modified” status.

Now it will highlight the modified files (in version control).

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