一点一点地使背景颜色变暗的简单方法

Question

我正在使用fullpage.js创建一个响应式的全页网站，我有7个部分，我的目标之一是创建一个从white开始的背景颜色，然后每当用户向下滚动到第7节时希望它变得黑暗。实际上我可以做到这一点，但由于获得了正确的黑暗量，我需要花费很多时间，还值得一提的是我使用this来创建渐变背景。

简而言之，我想做以下事情：

1. 我想加强从白色到黑暗的颜色。
2. 如果可能，你可以调整吗？让我也想要一个从白色到深红色，从蓝色到白色等的背景。

到目前为止，我正在使用此代码将背景放在我网站的每个部分，因为您可以看到它很难维护，而且代码似乎很大。我可以做A = White然后B = Gray这样的功能然后该功能会自动将它从白色渐变到灰色吗？

/ *第1节 * --------------------------------------- * /

SECTION1 {

background: -moz-linear-gradient(top,  rgba(255,255,255,1) 37%, rgba(255,255,255,0.55) 65%, rgba(187,187,187,0.05) 96%, rgba(178,178,178,0.05) 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(37%,rgba(255,255,255,1)), color-stop(65%,rgba(255,255,255,0.55)), color-stop(96%,rgba(187,187,187,0.05)), color-stop(100%,rgba(178,178,178,0.05)));
background: -webkit-linear-gradient(top,  rgba(255,255,255,1) 37%,rgba(255,255,255,0.55) 65%,rgba(187,187,187,0.05) 96%,rgba(178,178,178,0.05) 100%);
background: -o-linear-gradient(top,  rgba(255,255,255,1) 37%,rgba(255,255,255,0.55) 65%,rgba(187,187,187,0.05) 96%,rgba(178,178,178,0.05) 100%);
background: -ms-linear-gradient(top,  rgba(255,255,255,1) 37%,rgba(255,255,255,0.55) 65%,rgba(187,187,187,0.05) 96%,rgba(178,178,178,0.05) 100%);
background: linear-gradient(to bottom,  rgba(255,255,255,1) 37%,rgba(255,255,255,0.55) 65%,rgba(187,187,187,0.05) 96%,rgba(178,178,178,0.05) 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#0db2b2b2',GradientType=0 );

} / *第2节 * --------------------------------------- * /

第2节{

background: -moz-linear-gradient(top,  rgba(206,206,206,0.15) 0%, rgba(207,207,207,0.15) 10%, rgba(216,216,216,1) 96%, rgba(216,216,216,1) 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(206,206,206,0.15)), color-stop(10%,rgba(207,207,207,0.15)), color-stop(96%,rgba(216,216,216,1)), color-stop(100%,rgba(216,216,216,1)));
background: -webkit-linear-gradient(top,  rgba(206,206,206,0.15) 0%,rgba(207,207,207,0.15) 10%,rgba(216,216,216,1) 96%,rgba(216,216,216,1) 100%);
background: -o-linear-gradient(top,  rgba(206,206,206,0.15) 0%,rgba(207,207,207,0.15) 10%,rgba(216,216,216,1) 96%,rgba(216,216,216,1) 100%);
background: -ms-linear-gradient(top,  rgba(206,206,206,0.15) 0%,rgba(207,207,207,0.15) 10%,rgba(216,216,216,1) 96%,rgba(216,216,216,1) 100%);
background: linear-gradient(to bottom,  rgba(206,206,206,0.15) 0%,rgba(207,207,207,0.15) 10%,rgba(216,216,216,1) 96%,rgba(216,216,216,1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#26cecece', endColorstr='#d8d8d8',GradientType=0 );

} / *第3节 * --------------------------------------- * /

SECTION3 {

background: rgb(226,226,226);
background: -moz-linear-gradient(top,  rgba(226,226,226,1) 0%, rgba(201,201,201,1) 69%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(226,226,226,1)), color-stop(69%,rgba(201,201,201,1)));
background: -webkit-linear-gradient(top,  rgba(226,226,226,1) 0%,rgba(201,201,201,1) 69%);
background: -o-linear-gradient(top,  rgba(226,226,226,1) 0%,rgba(201,201,201,1) 69%);
background: -ms-linear-gradient(top,  rgba(226,226,226,1) 0%,rgba(201,201,201,1) 69%);
background: linear-gradient(to bottom,  rgba(226,226,226,1) 0%,rgba(201,201,201,1) 69%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#e2e2e2', endColorstr='#c9c9c9',GradientType=0 );

}

/ *第4节 * --------------------------------------- * /

section4 {

background: rgb(186,186,186);
background: -moz-linear-gradient(top,  rgba(186,186,186,1) 0%, rgba(147,147,147,1) 32%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(186,186,186,1)), color-stop(32%,rgba(147,147,147,1)));
background: -webkit-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -o-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -ms-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: linear-gradient(to bottom,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#bababa', endColorstr='#939393',GradientType=0 );

} / *第5节 * --------------------------------------- * /

section5 {

background: rgb(186,186,186);
background: -moz-linear-gradient(top,  rgba(186,186,186,1) 0%, rgba(147,147,147,1) 32%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(186,186,186,1)), color-stop(32%,rgba(147,147,147,1)));
background: -webkit-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -o-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -ms-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: linear-gradient(to bottom,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#bababa', endColorstr='#939393',GradientType=0 );

}

/ *第6节 * --------------------------------------- * /

section6 {

background: rgb(186,186,186);
background: -moz-linear-gradient(top,  rgba(186,186,186,1) 0%, rgba(147,147,147,1) 32%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(186,186,186,1)), color-stop(32%,rgba(147,147,147,1)));
background: -webkit-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -o-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -ms-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: linear-gradient(to bottom,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#bababa', endColorstr='#939393',GradientType=0 );

}

/ *第7节 * --------------------------------------- * /

{章第7

background: rgb(186,186,186);
background: -moz-linear-gradient(top,  rgba(186,186,186,1) 0%, rgba(147,147,147,1) 32%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(186,186,186,1)), color-stop(32%,rgba(147,147,147,1)));
background: -webkit-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -o-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: -ms-linear-gradient(top,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
background: linear-gradient(to bottom,  rgba(186,186,186,1) 0%,rgba(147,147,147,1) 32%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#bababa', endColorstr='#939393',GradientType=0 );

}