How to change the font color of post title

Hi there

I am currently working on a website with all h1 set to white in the theme’s advanced styling options. However, for all blog posts I would like the h1 color to be black. I have tried to add the following code to the stylesheet (without success):

#top #wrap_all .header_color h1, #top #wrap_all .main_color h1, #top #wrap_all .alternate_color h1 {
color:000000!important;
}

h1 .post-title .entry-title {
color:000000!important;
}

and for testing purposes to see if the stylesheet would overwrite the advanced styling options:
h1 {
color:000000!important;
}

None of these is working.

Can you help?