Prestashop Theme tweaks and fixes

I need some fixes and tweaks done on my prestashop site.

Here are what needs to be done:

1. top search text color must be white
3. Need language bar next to currency top right
4. slider round circle with price in, price is not in the middle
5. top sellers pictures not showing
7. Categories bar on left the + and - turns to white if mouse over making it not seeale, must be different color
8. show secure payment block left column and remove from footer
10. OTHER RANDOM PRODUCTS IN THE SAME CATEGORY on product detail page left and right arrows not showing
12. Viewing products in category, the products is not neatly display, some are larger than others.

The site is: yellowbox.co.za