By going to the “Appearance” panel when you customize your theme, you are presented with many options that can let you change the colour scheme of Purify, as well as showing/hiding different features such as enabling comments or showing links to your social network sites.

Background color of the Sidebar.
Text and link color of the Sidebar.
Background color of the whole page. This will only be visible if “No Background Image” is selected.
This is the background color of each post, both on the index page and on each permalink page.
The main text color. Used on everything that isn’t a link and not on the sidebar.
The main link color that is used for the headers of each post and all links within posts.
Color for all the “meta tags” that are associated with every post. E.g. “permalink” and “notes”. Remember that this color will be faded by 50% and show it’s full color when it is hovered.
This is black by default. The separator is the black line that is used to separate each section on the sidebar. This color is faded at 20%.
This is black by default. The separator is the black line that is used to separate each section on posts. This color is faded at 20%.
Font for post titles.
Font for posts.
Font used for all fonts other than titles and post content, such as meta data and sidebar font.
Custom title font. Just input your CSS code for the font, such as “‘Comic Sans’, sans-serif”.
Custom post font. Just input your CSS code for the font, such as “‘Comic Sans’, sans-serif”.
Custom secondary font. Just input your CSS code for the font, such as “‘Comic Sans’, sans-serif”.
Upload an image here that will replace the heading on the sidebar. Useful if you have a logo, fancy font image etc. For this to apply, Sidebar Header must be checked.
This already has a default which is the subtle canvas texture. Any background you upload will repeat. For some good background patterns that repeat - check out subtlepatterns.com
Check this option to have an image instead of a text heading on the sidebar.
If this is checked, the background will revert to use a single color, which can be set using Background Color.
This will make the social icons on the sidebar white. They are black by default. Useful if you wish to have a dark sidebar background color.
This will make the post icons white. They are black by default. Useful if you wish to have a dark post background color.
This will make the tag and type filter buttons on the sidebar white. They are black by default. Useful if you wish to have a dark sidebar background color.
This will make the more and back to top buttons white. They are black by default. Useful if you wish to have a dark background color or image.
This will make the subtle post border white. It is black by default. Useful if you wish to have a dark background color or image.
Use the new photoset layouts on the index page. If this isn’t checked photoset posts will just stack photos on top of one another (default).
Use the new photoset layouts on permalink pages. If this isn’t checked photoset posts will just stack high res photos on top of one another (default).
This needs to be checked in order for your Facebook comments to appear. Once this is checked, enter your Facebook App ID to complete setting up Facebook comments.
If this is checked, the social media bar will show underneath the pages on the sidebar. The social media bar is a row of circle buttons that can give users one click access to your profiles or other website. Simply submit the following in order to have the links show up in the social bar.
The sidebar is default position fixed, meaning it won’t move when the page scrolls. However, if you have a lot of pages and a large description / blog title - this means content on your sidebar may not be visible to users with small resolutions. If you enable a static sidebar, then the sidebar will scroll with the page allowing for all sidebar content to be visible.
With this option enabled, tags will link to permalink pages instead (e.g. “design” will link to “blogname.tumblr.com/tagged/design). This means that although it won’t perform the fading in / fading out filtering animations, it will load ALL items under that tag as a new page. The maximum amount of tags that will load is 25 and they will be sorted by popularity. For more info read this blog post.
Use infinite scrolling (no need for a more button) with “tags with permalinks” option enabled.
Make the load more posts button in the bottom right hand corner larger.
Increases the size of the Title font by 2px.
Increases the size of the title font by 4px.
Increases the size of the Post font by 2px.
Increases the size of the secondary font by 2px.
Increases the size of the Sidebar header font by 2px.
Increases the size of the sidebar header font by 4px.
Makes all post titles uppercase. This is enabled by default.
Makes all titles bold.
Makes the sidebar wider. This is useful is you have lots of tags, or a long blog description.
Uses social icons 1.5 times larger than the default icons.
The homepage posts will be 400px wide, which is almost twice the size of the default which is 250px.
If you wish to have comments on your Tumblr, enter your disqus shortname here to activate comments. To get your disqus shortname, sign up to disqus.com to receive one.
If you wish to track google analytics stats on your blog, sign up to google analytics and place your Google Analytics Web Property ID in here to active analytics.
Enter your Clicky ID so Clicky stats can be tracked for your site.
You need to enter your Facebook APP ID to enable Facebook comments on your blog. To obtain one, follow this guide up to where it says “modify Tumblr theme” (that part is already taken care of by the Purify theme). Enter your Facebook ID to enable Facebook comments.
It is possible to use your Typekit account to use custom fonts for the headings.
1. Enter your Typekit User ID which can be found in the Kit Editor. inside the “Embed Code” option found on the top right.
2. Back in the Kit Editor, click on “using fonts in CSS” which is on the top left underneath the Selectors section. This will show a pop up of how to use the fonts in CSS. Copy the text from the third box, but only the part that comes after “font-family”.
E.g. if it has this:
h1 { font-family: futura-pt,sans-serif; }
Then you only need to copy this part:
futura-pt,sans-serif
With that copied, enter it into the Custom Title Font field.
3. Remember to publish your kit settings and wait a few moments but if you follow the steps your headings should change to your new Typekit settings.
e.g. yourname@gmail.com
e.g. rainerbird
e.g. www.facebook.com/wrainbird
e.g. http://www.flickr.com/photos/rainerbird/
http://www.last.fm/user/williby27
http://au.linkedin.com/pub/william-rainbird/22/11/224
http://www.youtube.com/williby27
e.g. rainerbird
e.g. http://www.myspace.com/giraffeincognito
Default for the tags label when “tags with permalinks” is enabled. Default: “popular tags”.
Label for the more button. Default is “more”.
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If you have any questions about customizing the theme that this guide does not answer, or are experiencing any problems with Purify, shoot me an email and I’ll see what I can do.