Documentation for a historical release of Infusion: 1.3
Please view the Infusion Documentation site for the latest documentation.
If you're looking for Fluid Project coordination, design, communication, etc, try the Fluid Project Wiki.

FSS - Colors and Themes


This page is currently deprecated, and will be removed shortly. For more up-to-date documentation, see the FSS Text and FSS Themes demos.

On This Page


Themes are new in v1.1.

This walk-through accompanies the FSS: Themes Functional Demo in describing how to used the Themes functionality of the Fluid Skinning System (FSS). Here, "themes" refer to the color schemes and "window dressings" for basic markup and FSS Helpers, such as Tabs, Widgets, Menus, etc. It is written under the assumption that readers have reviewed the Fluid Skinning System (FSS) introductory article and understand what the FSS is.

For information about customzing themes by overriding FSS styles, see the "Overriding" section of the FSS introductory page.
For more information about the walk-throughs in general, links to functional demos and FSS style sheets, please refer to FSS - Getting Started.

Before continuing with this article, it is highly recommended that you glance over the following walk-throughs as they explain certain concepts in detail:

  1. FSS - Layout to give you an overview of how layout in the FSS works.
  2. FSS - Advanced Layout to take FSS Layout further, from simple containers to Widgets and GUI systems.

Incorporating the Style Sheet

In order to use the FSS Theme class names, you will need to include the following files in the <head> of your document:


Where is the Rust Theme?

Please note that while Rust is still part of the FSS bundle, it has been deprecated and is no longer a supported theme

All FSS class names use the fl- prefix. In our demos, if you see other class names without this prefix they are either: complimentary CSS; overriding CSS; or specific extensions of the FSS CSS. This means if you don't like the way a certain class names behaves you can easily override or extend them.

What is a Theme?

For the FSS, a theme is a collection of color definitions used together in different ways to create a look and feel for markup. You could use a theme as a starting point to give a page a basic appearance, and you could extend FSS Themes for even more detailed and site-specific appearances.

Since this is a highly subjective area of the FSS CSS, it is very likely that you would want to customize the themes further to suit your needs. However, themes are built in a purposeful way so that they fulfill specific needs, such as; high contrast colors for the visually impaired, the resetting of italic/oblique styles to normal to avoid problems with dyslexia, the enhacement of links to stand out, and color combinations known to be comfortable to read.

Please note: this document assumes you have already read FSS Helpers and FSS Layout articles.

Implementing Themes

So far, there are 5 shippable themes:

  1. High Contrast:
  2. High Contrast Inverted
  3. Mist (Medium Contrast Blue/Grey)
  4. Coal (Medium Contrast Grey)
  5. Slate (Low Contrast Grey)

To use FSS Themes, just apply the theme class name at the root level of the markup you want to theme. So, if your markup looks like:

<div id="rootContainer" class="navbar">
   <ul class="fl-listmenu">
      <li><a href="#">Nav link</a><li>
      <li><a href="#">Nav link</a><li>
      <li><a href="#">Nav link</a><li>

Then you should put the theme on the root node here, changing it to class="fl-theme-mist navbar"

Theme Details

High Contrast Black and White

<div class="fl-theme-hc">...</div>

fl-theme-hc is the class name for our main high contrast theme, which is a collection of just black or white elements (no gray or colors). When used with FSS Helpers utility class names such as fl-icon you can enhance your content's readability and/or useability by actually manipulating content.

High Contrast Inverted Black and White

<div class="fl-theme-hci">...</div>

fl-theme-hci is the class name for our inverted high contrast theme. Again, when used with FSS Helpers utility class names such as fl-icon you can enhance your content's readability and/or useability by actually manipulating content.


<div class="fl-theme-mist">...</div>

fl-theme-mist is the class name for our soft blue theme.


<div class="fl-theme-coal">...</div>

fl-theme-coal is the class name for our medium contrast grey theme.


<div class="fl-theme-slate">...</div>

fl-theme-slate is the class name for our low contrast grey theme.