1.Eclipse改变背景颜色
Windows menu --> Preference
General -> Editors -> Text Editors(click)， 在右下角底部：Appearance color option: Background colour，改成你想要的颜色，就可以啦！
R:204, G:232, B:207
2.Eclipse加大字体
Windows menu ---> Preferences
General --> Apperance ---> Colors and Fonts(click)
Basic --> Text Font click Edit... button, modify the size to 15
3.Eclipse 代码窗口加行数
choose::::Show Line Numbers.