Search: Change header search bar elements

Style overrides for the header search bar:

1

Background color of search bar

/* -- code to change header search bar elements -- */
input.search-bar:focus, .header-search .search-bar:focus,.header-search .search-bar:active {
    background-color: #fff;
    border: 1px solid #999;
}
/* - end - */

2

Input search text

/* -- code to change header search bar elements -- */
.header-search .search-bar:focus,.header-search .search-bar:active {
  color: #cc0000;
  font-size:1.2em;
}
/* - end - */

3

Button background

/* -- code to change header search bar elements -- */
.header-search .search-btn {
  background-color:#d7d7d7;
}
/* - end - */

Where do I add the code?

Open your Code Editor. 

From your list of themes, find the Actions link for the theme you'd like to edit. Then select Edit code. Example draft theme:

Example if you're working from your main live/published theme:

Quick link if the theme is live/published:
Open Code Editor

Next, in the Code Editor find your theme's CSS file, this will vary depending on which version of Pipeline you're running:
Which version of Pipeline am I using?

Once you know your version, find the right file in the left Assets folder:

Pipeline 4 - If you're working with a draft theme, open this file:

You'll be opening this file:

assets/theme.scss.liquid

Quick link if the theme is live/published:
assets/theme.scss.liquid

Earlier versions of Pipeline - If your theme is older than Pipeline 4 open this file for draft themes:

You'll be opening this file for earlier versions of Pipeline:

assets/style.scss.liquid

Quick link if the theme is live/published and an earlier version of Pipeline:
assets/style.scss.liquid

Add the code to the very bottom of the file on a new line. Make a couple blank lines before pasting the code snippet. 

Example:

Save the file after adding your code.