changing colors in css

Hola....

After reading repeated comments from houston lively about helpless members, lol (just kidding)

I figured id better learn....

So and yes i made a copy of the file before i started, learned that already the hard way

So I went to the css....and was trying to change background for the ugly grey in the icon to black......seems below I accomplished that.but no change....I matched the color code before I did it 

div.thumbnail_image a {

text-decoration: none;

outline: none;

}

div.thumbnail_image img.thumbnail_image_file,

div.thumbnail_image img.thumbnail_image_file2 {

position: relative;

display:block;

    width: 64px;

    height: 64px;

    background-color: 000000;

}

Yes I got firebug, not sure how looking at the page find its for me but I have found a few on my own that matched the highlight... :))

so what part of this am i obviously omitting, caches all cleared still grey....;((......I was able to change the background image following someone's instructions,

thanks

Looks like you're missing a # before the numbers (#000000). If this is additional CSS, also make sure it's overriding the default CSS. You can try adding !important after any values (example: background-color: #000000 !important;).

You might also want to take a look at the Site Customizer: https://github.com/boonex/dolphin.pro/wiki/Using-the-Site-Customizer