Joomla Templates

Hello!

I would like to change my website desgin from the Blackbear 1.5 template into the Blackbearpro 1.5 template, because of the right/ third column.
So far it works well but I would like to have the same login-form design like in Blackbear 1.5.
I have two pics where you can see what I mean.

This is the Blackbear:



And the BlackbearPro




Is it possible to get the blue button and the background of the Blackbear template into the Blackbearpro template? I have found the button and background in the template folder but I cannot change the css code like I wanted it to have! And I have tried a lot!
It would be great if anyone could help me!

Best and thanks for your help!
beutelbaer