Some improvements over UI Grid. Just load the CSS after theirs to override the styles.

<link rel="stylesheet" href="http://ui-grid.info/release/ui-grid.css" type="text/css">
<link rel="stylesheet" href="/path/to/ui-grid-custom.css" type="text/css">

Note: The demo reports being insecure because ui-grid.info has a broken certificate (last time I checked)

A normal UI Grid with the custom CSS applied

UI Grid with clickable rows enabled

You can install this via NPM:

$ npm install --save ui-grid-css

Then import the CSS file directly:

<link rel="stylesheet" href="/node_modules/ui-grid-css/dist/ui-grid-custom.css" type="text/css">

Or the minified version:

<link rel="stylesheet" href="/node_modules/ui-grid-css/dist/ui-grid-custom.min.css" type="text/css">

The source is provided in Sass, so it can be easily changed (to match your color scheme for example)

There are two files in the src directory:

/src
  _variables.scss
  ui-grid-custom.scss

In the variables file you can change the main colors used as you can imagine.

Once done, build with gulp: (If you don't have it installed, run npm install -g gulp first)

$ gulp build

And this will update both css files in the dist folder.