看起来你只需要使用CSS就可以改变复选框的灰度颜色。

下面将复选框从黑色转换为灰色(这是我想要的):

input[type="checkbox"] {
    opacity: .5;
}

这是一个简单的CSS解决方案，没有任何jQuery或JavaScript代码。

我使用FontAwseome图标，但你可以使用任何图像

input[type=checkbox] {
  display: inline-block;
  font-family: FontAwesome;
  font-style: normal;
  font-weight: normal;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  visibility: hidden;
  font-size: 14px;
}

input[type=checkbox]:before {
  content: @fa-var-square-o;
  visibility: visible;
  /*font-size: 12px;*/
}

input[type=checkbox]:checked:before {
  content: @fa-var-check-square-o;
}

现在只使用CSS就可以改变所有复选框的颜色:

如前所述，当选中复选框时，最近的重音颜色CSS属性用于更改复选框的颜色。 然而，我没有看到其他人提到的是，当复选框未选中时，如果你使用CSS的过滤器属性，你可以改变背景颜色和/或边界。

对于简单的更改，您可以使用亮度将白色背景颜色变深为灰色或黑色，并使用色调旋转可以为边界赋予颜色(至少在Firefox中是这样)。然而，如果你想完全改变背景为任何颜色，你也可以用滤镜来做到这一点，但你必须做一些技巧，你将多个滤镜组合在一起，基于这个问题的方法:如何仅使用CSS滤镜将黑色转换为任何给定的颜色

幸运的是，这种复杂的方法似乎在所有浏览器中都有效，并且您可以使用生成器来计算所需的过滤器:https://codepen.io/jumarjuaton/full/mdJYWYq (这个链接是从白色转换而来的，不像上面链接的问题)

请看下面的例子:

/* Disable 'filters' while checked since they impact 'accent-color'. */ input[type='checkbox']:checked { filter: none; } input[type='radio']:checked { filter: none; } /** * We use 'accent-color' for colors in the checked stated and we use * 'filter' to change the background colors in the unchecked state. */ .red-bg-input { accent-color: red; filter: invert(85%) sepia(83%) saturate(6726%) hue-rotate(360deg) brightness(111%) contrast(111%); } .green-bg-input { accent-color: green; filter: invert(49%) sepia(65%) saturate(7149%) hue-rotate(92deg) brightness(89%) contrast(103%); } .blue-bg-input { accent-color: blue; filter: invert(30%) sepia(99%) saturate(6101%) hue-rotate(202deg) brightness(52%) contrast(136%); } .teal-bg-input { accent-color: teal; filter: invert(58%) sepia(77%) saturate(3139%) hue-rotate(157deg) brightness(89%) contrast(101%) } .dark-input { accent-color: black; filter: brightness(0%) saturate(100) hue-rotate(25deg); } .gray-input { accent-color: purple; filter: brightness(60%) saturate(100) hue-rotate(25deg); } .orange-bg-input { accent-color: orange; filter: invert(63%) sepia(28%) saturate(7249%) hue-rotate(0deg) brightness(103%) contrast(105%); } <input type="checkbox" /> <input type="checkbox" checked/> <input type="radio" /> <input type="radio" checked /> Defaults <br> <input class="red-bg-input" type="checkbox" /> <input class="red-bg-input" type="checkbox" checked/> <input class="red-bg-input" type="radio" /> <input class="red-bg-input" type="radio" checked/> Red <br> <input class="green-bg-input" type="checkbox" /> <input class="green-bg-input" type="checkbox" checked/> <input class="green-bg-input" type="radio" /> <input class="green-bg-input" type="radio" checked/> Green <br> <input class="blue-bg-input" type="checkbox" /> <input class="blue-bg-input" type="checkbox" checked/> <input class="blue-bg-input" type="radio" /> <input class="blue-bg-input" type="radio" checked/> Blue <br> <input class="teal-bg-input" type="checkbox" /> <input class="teal-bg-input" type="checkbox" checked/> <input class="teal-bg-input" type="radio" /> <input class="teal-bg-input" type="radio" checked/> Teal <br> <input class="orange-bg-input" type="checkbox" /> <input class="orange-bg-input" type="checkbox" checked/> <input class="orange-bg-input" type="radio" /> <input class="orange-bg-input" type="radio" checked/> Orange <br> <input class="dark-input" type="checkbox" /> <input class="dark-input" type="checkbox" checked/> <input class="dark-input" type="radio" /> <input class="dark-input" type="radio" checked/> Black/dark <br> <input class="gray-input" type="checkbox" /> <input class="gray-input" type="checkbox" checked/> <input class="gray-input" type="radio" /> <input class="gray-input" type="radio" checked/> Purple + Gray background

我更喜欢使用图标字体(如fontawesme)，因为它很容易用CSS修改它们的颜色，而且它们在高像素密度的设备上缩放得非常好。这里是另一个纯CSS变体，使用类似于上面的技术。

(下面是一个静态图像，这样你可以可视化结果;请参阅JSFiddle的交互式版本。)

与其他解决方案一样，它使用label元素。相邻的span保存复选框字符。

span.bigcheck-target { font-family: FontAwesome; /* Use an icon font for the checkbox */ } input[type='checkbox'].bigcheck { position: relative; left: -999em; /* Hide the real checkbox */ } input[type='checkbox'].bigcheck + span.bigcheck-target:after { content: "\f096"; /* In fontawesome, is an open square (fa-square-o) */ } input[type='checkbox'].bigcheck:checked + span.bigcheck-target:after { content: "\f046"; /* fontawesome checked box (fa-check-square-o) */ } /* ==== Optional - colors and padding to make it look nice === */ body { background-color: #2C3E50; color: #D35400; font-family: sans-serif; font-weight: 500; font-size: 4em; /* Set this to whatever size you want */ } span.bigcheck { display: block; padding: 0.5em; } <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" /> <span class="bigcheck"> <label class="bigcheck"> Cheese <input type="checkbox" class="bigcheck" name="cheese" value="yes" /> <span class="bigcheck-target"></span> </label> </span>

这是它的JSFiddle。

input[type=checkbox].css-checkbox {
    position: absolute;
    overflow: hidden;
    clip: rect(0 0 0 0);
    height: 1px;
    width: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
}

input[type=checkbox].css-checkbox + label.css-label {
    padding-left: 20px;
    height: 15px;
    display: inline-block;
    line-height: 15px;
    background-repeat: no-repeat;
    background-position: 0 0;
    font-size: 15px;
    vertical-align: middle;
    cursor: pointer;
}

input[type=checkbox].css-checkbox:checked + label.css-label {
    background-position: 0 -15px;
}

.css-label{
    background-image:url(http://csscheckbox.com/checkboxes/dark-check-green.png);
}

<!DOCTYPE html>
<html>
<style>
/* The container */
.container {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 22px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Hide the browser's default checkbox */
.container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

/* Create a custom checkbox */
.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: white;
  border: 2px solid red;
}

/* On mouse-over, add a grey background color */
.container:hover input ~ .checkmark {
  background-color: #ccc;
}

/* When the checkbox is checked, add a white background */
.container input:checked ~ .checkmark {
  background-color: white;
}

/* Create the checkmark/indicator (hidden when not checked) */
.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

/* Show the checkmark when checked */
.container input:checked ~ .checkmark:after {
  display: block;
}

/* Style the checkmark/indicator */
.container .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid green;
  border-width: 0 3px 3px 0;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}
</style>
<body>

<h1>Custom Checkboxes</h1>
<label class="container">One
  <input type="checkbox" checked="checked">
  <span class="checkmark"></span>
</label>
<label class="container">Two
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
<label class="container">Three
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
<label class="container">Four
  <input type="checkbox">
  <span class="checkmark"></span>
</label>

</body>
</html>