hover triangle color change

how to change the color of the triangle that shows up when I hover over the menu items on the mainmenu?

Triangle you talk about is probably (depending on template) some picture you need to change. If you can't find it , best is to send us your link and we will tell you witch picture you need to change.

i dont have my site online, but you can see in the attached image the orange triangle on the left of the green text link

That is changed using css for that list (UL tag).

example:

ul
{
list-style-image: url("/images/some_image.gif")
}

found it!