Flashes Menu - 1 button with different color

Hi, i wonder if you could help me, i wanted to have one root button with different color than the others, like a highlight. For example, the first one red and the others blue, can it be done?
Thanks in advance!

in menu item settings in "Link Type Options" , "Link CSS Style" you can put value like this:

" red"

(note first character is blank), then in template_css.css add:

.red{
backgorund:red!important;
}