在下面目录找到Mac sublime text所使用的配置文件：

/Users/wxxf/Library/Application Support/Sublime Text/Packages/User

修改所用配置文件中的selection属性即可：

<dict>
	<key>settings</key>
	<dict>
		<key>background</key>
		<string>#C7EDCC</string>
		<key>caret</key>
		<string>#000000</string>
		<key>foreground</key>
		<string>#000000</string>
		<key>invisibles</key>
		<string>#3B3A32</string>
		<key>lineHighlight</key>
		<string>#3E3D32</string>
		<key>selection</key>
		<string>#FFFFCC</string>
	</dict>
</dict>