Why can't I edit some colours?

I have applied a template to my form because I liked the layout. Unfortunately I can't figure out how to change the colour of the little triangle at the top, the thin border, or the mouse-over colour change of the submit button. Any way you can help?

I am looking in to updating this elements but it looks like the theme may be overriding some of the changes.  I will update you here as soon as I have found a fix.

I checked your most recent copy and it looks like the little triangle was removed.  For the submit button mouse over, you can add this code to your form:

.form-submit-button:hover {
background : orange !important;
}

Change the color to whatever you would like.  As far as the thin border, if you wouldn't mind elaborating on which boarder you are referring to, we will be happy to help adjust it.