When you sign up for Twitter, you get Twitter's standard blue clouds background and a bird icon as your profile picture. This is the background and picture visitors will see when they visit your profile page.
With a few steps, you can make your Twitter home page a bit more personalized, by using one of several backgrounds and color combinations that Twitter provides, and by uploading a picture of yourself as your profile picture.
First, let's get your beautiful mug up there!
Sign in to Twitter, and click "Settings." Then click the "Picture" tab.
Click "Browse..." and search for a suitable picture on your hard drive. Even though the your picture shows up small when you tweet, it will appear full size when people click on your picture from the profile page. Twitter also recommends that when uploading a picture of yourself, try an up-close face view, because it will normally be viewed at a small size.
Once you've uploaded your profile picture, click the "Design" tab.
Twitter provides 16 themes to choose from. You can try everything out before saving your changes, making it easy to test out new color and background combinations.
Click on the themes to try them out live. Notice the two links below the theme thumbnails. Click "Change background image." For now, ignore the "Browse..." button; this will be covered in part 2 of this series.
You have three options with the background image: leave it as is, turn off the background image and use the plain colored background, or tile (repeat) the background image. Thus, each theme has 3 different backgrounds to it, giving you 48 different basic looks.
Now click "Change design colors." This is where your options become nearly infinite. Select any color you like for the background, text, links, sidebar, and sidebar border.
Using these simple tools Twitter provides, you can customize your Twitter home page to use any color scheme you like. And all without uploading anything more than a profile picture! Your profile page will be unique, with only a few minutes of effort.