要在上面的基础上展开，您可以为每个标尺设置多个标尺和颜色。默认的颜色是“#5a5a5a”，如果你在最后添加两个数字，你可以调整它的透明度，使一些标尺比其他的更暗。

下面是我的标尺，以一种更容易编辑的简洁方式定义。

"editor.rulers": [
    {"column":   0, "color": "#5a5a5a80"}, // left boundary is 50% opaque
    {"column":   2, "color": "#5a5a5a20"}, // tab stops are 12.5% opaque
    {"column":   4, "color": "#5a5a5a20"},
    {"column":   6, "color": "#5a5a5a20"},
    {"column":   8, "color": "#5a5a5a20"},
    {"column":  10, "color": "#5a5a5a20"},
    {"column":  40, "color": "#5a5a5a20"}, // center line
    {"column":  79, "color": "#5a5a5a20"}, // right rule minus one
    {"column":  80, "color": "#5a5a5a80"}, // right rule
    {"column": 120, "color": "#5a5a5a40"}  // extra right rule
],   

要在上面的基础上展开，您可以为每个标尺设置多个标尺和颜色。默认的颜色是“#5a5a5a”，如果你在最后添加两个数字，你可以调整它的透明度，使一些标尺比其他的更暗。

下面是我的标尺，以一种更容易编辑的简洁方式定义。

"editor.rulers": [
    {"column":   0, "color": "#5a5a5a80"}, // left boundary is 50% opaque
    {"column":   2, "color": "#5a5a5a20"}, // tab stops are 12.5% opaque
    {"column":   4, "color": "#5a5a5a20"},
    {"column":   6, "color": "#5a5a5a20"},
    {"column":   8, "color": "#5a5a5a20"},
    {"column":  10, "color": "#5a5a5a20"},
    {"column":  40, "color": "#5a5a5a20"}, // center line
    {"column":  79, "color": "#5a5a5a20"}, // right rule minus one
    {"column":  80, "color": "#5a5a5a80"}, // right rule
    {"column": 120, "color": "#5a5a5a40"}  // extra right rule
],   

结合kiamlaluno和Mark的答案，以及formatOnSave到Python的自动意图代码:

{
    "editor.formatOnSave": true,
    "editor.autoIndent": "advanced",
    "editor.detectIndentation": true,
    "files.insertFinalNewline": true,
    "files.trimTrailingWhitespace": true,
    "editor.formatOnPaste": true,
    "editor.multiCursorModifier": "ctrlCmd",
    "editor.snippetSuggestions": "top",
    "editor.rulers": [
        {
            "column": 79,
            "color": "#424142"
        },
        100, // <- a ruler in the default color or as customized at column 0
        {
            "column": 120,
            "color": "#ff0000"
        },
    ],

}

在v1.43中是单独为垂直标尺着色的功能。

支持多个不同颜色的标尺-(在settings.json中):

"editor.rulers": [
  {
    "column": 80,
    "color": "#ff00FF"
  },
  100,  // <- a ruler in the default color or as customized (with "editorRuler.foreground") at column 100
  {
    "column": 120,
    "color": "#ff0000"
  },
]

更改标尺的默认颜色:

"workbench.colorCustomizations": {

  "editorRuler.foreground": "#fffa"   
            // or "#ffffffaa" - the a's are alpha transparency values
}

使用Visual Studio Code 1.27.2:

当我转到文件>首选项>设置，我得到以下选项卡 我在搜索设置中输入标尺，得到以下设置列表 单击设置中的第一个Edit。json，我可以编辑用户设置 点击默认用户设置中出现在设置左侧的钢笔图标，我可以在用户设置中复制它并编辑它

在Visual Studio Code 1.38.1中，第三点显示的截图变成了下面的截图。

不再显示用于选择默认用户设置值的面板。

除了全局的“editor.ruler”设置外，还可以在每种语言级别上设置。

例如，Python项目的样式指南通常指定79或120个字符，而Git提交消息应该不超过50个字符。

在你的设置中。Json，你会写:

"[git-commit]": {"editor.rulers": [50]},
"[python]": {
    "editor.rulers": [
        79,
        120
    ]
}