Oupss! I have focused on the "blue" and think you want change the color! 
For replace the title "Billing Address" do this :
Go to Host > Languages > Language Editor (bottom left), then in the tree open Local Resources > Desktop Modules > WWStore > App_LocalResources. Click on the file Checkout.ascx and look in the right part you would have the resource lblBillAddressTitle.Text. Replace it with your text and save!
For hide the Shipping block follow this steps :
You can find the file DefaultAddressCheckout.ascx inside the folder ...\DesktopModules\WWStore\Providers\AddressProviders\DefaultAddressProvider. Open it with your favorite editor and search for this block:
<tr Visible="false">
<td>
<fieldset>
<legend>
<dnn:label id="lblShippingAddressTitle" runat="server" controlname="lblShippingAddressTitle"></dnn:label>
</legend>
Add the text in red and save !
Gilles
stockguru wrote
Thanks Gilles.. you my have misunderstood me.. I'm not trying to change the style of those fonts.. I actually want to change the title.. for example, instead of "Billing Address" I want it to say "Contact Information." Is that doable? If so, how? Also, is there anyway I can deactivate the shipping address completely? I just want to have the section that says "Billing Address" and change it to "Contact Information" so that I can arrange local pick up of my items and do away with customers inputting their shipping info. Just to remind you, I'm using the EmailPayment plan, so I'm not messing with Paypal or anything else. Thanks for all the help and precise information.