OK I think I have this figured out. I'm sure there is an easier way to do this but this is what I have done.
1. I captured a screen shot of my new blog color
2. Edited it in Picasa, added signature, cropped, saved as a .jpg file
3. Blog This from Picasa to my blog.
4. Copied the script and saved it under settings.
Now if this all works out right it should automatically come to my post with every post. I do think the signature is a little too big but I want to go sew now. I'll play with my blog more later. I mean there are more things in life than a blog.