XSS scripting problem, Sparky Pro upgrade Question

I'm using the Free Version of Sparky version 0.96b running Joomla 2.5.21 and I'm receiving via SiteLock Premium service a bunch of XSS error warnings. There are NO malware or injections or anything and the XSS error shows a css_request diff on the end of all the errors. I think it has something to do with the Sparky. Can you take a look at the errors and tell me if its the template?

Also, I'd like to upgrade to Sparky Pro from the free 0.96b and am really worried that its going to Kill my design, but at the same time I want the html markup to get better validation results from W3C. How do you recommend is the best way to get the design, Joomla and Sparky upgraded?????

Thanks,
Kenny

Overwrite template files , you can skip

layout.css
template_css.css
and files under /styles/ folder

Thank you for the response! Would this technique work even if I stay on 2.5.22 Joomla version for the time being? I have to quote my client an upgrade Joomla cost but want to get rid of the XSS scripting issue in the meantime.

You can do such overwrite for j2.5 template on j2.5 or j3.x template on j3

Thanks, I'll have to install a fresh version of Joomla 3.3.x and then install the newest Sparky version, then overwrite the following files once I have both freshly updated up and running:

Overwrite these files once new sparky is installed:
layout.css
template_css.css
and files under /styles/ folder

Then I should be good to go, right? Other than my other extensions that may need installed.

No overwrite all template files but you may want to skip;

layout.css
template_css.css

if you have changes in them, and that is ok