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.