Changing Color of Menu and hover color of Menubar

Generally, yes, you can make these kinds of changes in the CSS code – but to do that, you need to have a custom CSS option in your theme, or you can add it via a plugin such as Custom CSS Manager or JetPack.

Once you have that set up, if you post a link to your site, someone can likely help you with the specifics.

Hey WPyogi thank you for your answer..I have installed the Custom CSS Manager..but do you know what to write to solve my problem?

The link to the site is: https://web859.webtest.flyhost.de/wordpress/

Hope you or somebody else can help me ??

Add this to your Custom CSS Manager section of the dashboard;

#menuhead {
 background-color: deepskyblue;
}

wow fantastic…thank you very much andrew…can I also change the orange color when I move over with the mouse?

No!
Joking.
Of course you can;

#menuhead a:hover, #menuhead .current-menu-item > a {
 background-color: deeppink;
}

Great great great… I love the wordpress support!!
Within minutes everybody helps eachother ??

The last thing which I have forgotten are these 3 orange lines… what′s the code for it?
Where I can learn these things?

Try using Firefox with the Firebug add-on for this kind of CSS troubleshooting. Or use whatever developer tool is available in your web browser.

If you want to learn about CSS, I’d recommend:
CSS Tutorials
Learning CSS

You’d change them as follows;

#homeGallery div.wrap {
 border-color: red;
}

thank you all for css codes and for the CSS Tutorials links ..I′ll install this firebug add-on and start learning today with this tutorials..maybe I will be able to make the last orange line at the bottom by myself! ??

yay I have done it!! If someone who reads this later and has the same problem it was:

`#footer div.wrap {
border-color: red;
}

hey guys I have a problem again..
I used your codes above and everything seems working at “home” but when I change the page and go to another page..the old colors are there and not the one which I changed with custom css..

What can I do?

Can you provide a link to the webpage with the issue?

Yes of course

The link:
https://web859.webtest.flyhost.de/wordpress/

I mean the orange lines/borders…the green one at the bottom is ok

The orange border is styled to this element on the home page:

<div class="sep sepinside">?</div>

You don’t have that element on the page you’ve just linked, which is why it is not working.