Four important questions for basic customization

Good afternoon,
I have some doubts.

1: Backgrounds:
I managed to change the background color of the images of the lists of categories and products, however when I walk into a category remains blank, change the color of the list of products in a category?

2:
Changing the size of product images, I've found how to change the images, but I only have the main image and the size is very small.

3rd.
The paid version comes without the promotional link?

4
How to change the button style checkout?

I want to buy the Pro version, but I want to explore everything.

Thank you.

Thank you for your attention, I managed to change the image size of the product was great.

But I find no way to let the background image of the product, the product list by category of another color.

The link is this, I'm auditioning all day.
teste.gruponews.com/index.php/categorias

Wonder, but now how do I change the width of the bottom, the height could ...
Is this the same place?

Sorry the English is Google! lol
Already changed the background color, can change the height but the width background can not, look at the example:
teste.gruponews.com/index.php/categorias/category/12-casamentos

I managed to configure. thank you very much
Hello, sorry for the hassle, why when I allow comments on the product the cart and login modules disappear?

Sorry, it's because I was disabled, but try to see now.

but I can edit within the Hika or i must to change the file and upload via FTP?

Hey!
Found, wonder.
Friend, I am very grateful for your helpfulness.

There is possibility to change the color and shape of the comments area?

Hello Nicolas,
I spent all day learning how to work with Hikary, all in the test environment.
Now installed in the main domain and I can not save the settings, Hika not let me save saying:

"Your checkout workflow is empty.
Checkout workflow invalid. The modification is ignored. See the documentation for more information on how to configure That option
Entered in valid weight unit. The system put back the default units.
Entered unit dimension in valid. The system put back the default units.
Saved Successfully "

I already checked and everything is as it had done earlier.
What should it be acontencendo?

Oh my friend, you were right, I was using Chrome, had already cleared Cache and Cookie and the error still, just going for Firefox that solved the problem.
Thank again.

nicolas wrote: Please edit the file "form" of the view "vote" via the menu Display->Views for your front end template and change the line:
<input class="button" type="button" value="Send" onClick="hikashop_send_comment();"

to:
<input class="button" type="button" value="Send" onClick="hikashop_send_comment();"/>

Hello Nicolas,
the first time everything worked, it worked like you said. ex. ( teste.gruponews.com/index.php/produtos/product/1-rosas )
Now when I'm setting up for the official website of the modules disappear again. ex. ( myamarylis.com/index.php/amo-te/product/3-buque-de-teste )
I've done the changes you told me, could help me again?