I don’t think this is a problem, this is just how the “All Hallow Eve” theme works: You can change this color inside this block: (Preferences-> Package Overview> Color Scheme - Default → All Eve of the Riddle)
<dict> <key>name</key> <string>Text base</string> <key>scope</key> <string>text</string> <key>settings</key> <dict> <key>background</key> <string>#434242</string> #THIS IS GRAY COLOR YOU WANNA CHANGE. <key>foreground</key> <string>#FFFFFF</string> </dict> </dict>
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