Sc Login problem Style Grafic

Hi, the first thing I wanted to congratulate you on this very important and useful form well developed.
I unfortunately some graphical issues, I'm using a template made ​​with artisteer, and the module Sclogin, is in a position outside the position of the original template.
1 - In the first Login.jpg attached picture you can see that the text color is blue (Login / Register) while I wanted to display it with black color, how can I do ..?
2 - In the second registered.jpg attached picture you can see the button (Register) smaller in size than the button (Access), how can I make the two buttons the same size ..?
3 - In the third and fourth pics Logout.jpg Logout_hover.jpg and you can see that when I pass the mouse over the button (Exit) becomes larger, how can I make the hover button of the same size ..?

I write below the changes made ​​in the template.css:

.sourcecoast.sclogin .btn-primary:hover
{
height: 34px !important;
width: 27px !important;
background: #595959 !important;
}
.sourcecoast.sclogin .btn-primary
{
background: #696969;
}
.sclogin-greeting, .sclogout-button
{
float:left; width:105px
}

In Waiting for your positive answer, thanks
Marco

Hi Alex, do not worry, these days I have tried to find solutions to solve problems. Unfortunately I stayed only two problems that I can not fix, as you can see from the pictures attached. A problem related to the writing of the full name that is displayed in two rows, and I wish that it is only one line. Another problem related to the display via smartphone popup login covered by the image of my logo.
To do the tests I loaded the site is accessible via this link www.ilgiardinodigiupi.it/Delizieditalia/
You can access the Login with username test password test
I await your reply, thanks for everything
Marco