Yes, it is possible to change the size and color of both your Site Title and your Tag Line. You will need to be careful when customizing your Site Title, because having a Site Title or Tag Line too large will cause your site's theme to incorrectly line up with your customized text.
You will need to create a short HTML tag to customize your Site Title. Here is the backbone of the tag:
<font>Your Site Title</font>
This tag should go in the "Site Title" or "Tag Line" box, and the name of your site should go after it (example above). You get to the Site Title box by logging into your site, and click on "Options" in the Toolbar, upper left corner. The areas with an asterisk (*) will need to be filled in by you. These are the areas where you can modify the look of the Site Title and/or the Tag Line.
There are 7 basic sizes to choose from: 1, 2, 3, 4, 5, 6, and 7. Here are the examples of each:
"Face" determines what font style will be displayed. To ensure that all your visitors will be able to correctly view the font you designate, you will need to use a basic font. There are nine basic fonts that are viewable on all browsers:
Comic Sans MS
Times New Roman
A: There are two main ways to designate the color of your font. One is to type the actual name of the color; such as "red" "green" "darkblue" "violet", etc.
B: The other (which gives you a lot more choices) is to use the HTML color code. It starts with a number symbol (#) and then six numbers. If you log into your site, click "Add Content"> "Add Text", the Text Editor will pop up. Now go up to the color box in the upper right corner (next to the globe icon) and click on it. The color palette will appear, and you will be able to identify the color you want. Notice the number that appears at the top when you float your mouse over your desired color. That's the number you will need to place after "color=" in the base tag. Example:
<font color="CC3300">Font Color</font>
Here is an example of all three parameters together:
What you type into the "Site Title" box:
<font size="5" face="Georgia" color="blue">My Site's Title</font>
What appears on your site:
My Site's Title