JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<div class="primary-billing">
<div>1</div>
<div>4</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
 <div>4</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
  <div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
  <div>1</div>
<div>4</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
 <div>4</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
<div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
  <div>3</div>
<div>10</div>
<div>5</div>
<div>5</div>
</div>

CSS

.primary-billing div:nth-child(10n+1), .primary-billing div:nth-child(10n+2)  {
  background: blue;
}

.primary-billing div:nth-child(10n+3), .primary-billing div:nth-child(10n+4)  {
  background: red;
}

.primary-billing div:nth-child(10n+5), .primary-billing div:nth-child(10n+6)  {
  background: green;
}

.primary-billing div:nth-child(10n+7), .primary-billing div:nth-child(10n+8)  {
  background: yellow;
}

.primary-billing div:nth-child(10n+9), .primary-billing div:nth-child(10n+10)  {
  background: purple;
}