Open the SP theme editor and load up the overlay you are using and change whatever you want. Most of the names are pretty clear.

As always we recommend that you create your own SP theme so that any customisation is not lost during a future update. (http://codex.simple-press.com/codex/themes/theme-basics/creating-a-theme/)

I read the link but there isnt how to change this color….only to rename path

I told you how to change the colour in my first post…

Sorry again, my english is very bad….I try to change this 

# ------------------------------------------------------------------
# The overall SP forum container
# ------------------------------------------------------------------
$mainBackGroundBase = '#1D80AA';
$mainBackGroundFrom = '#1D80AA';
$mainBackGroundTo = '#1D80AA';
$mainBackGroundBorder = '1px solid #BBBBBB';
$mainBackGroundColor = '#777777';
$mainBackGroundHover = '1px solid #BBBBBB';
$mainBackGroundGradient = "-moz-linear-gradient(100% 100% 90deg, $mainBackGroundTo, $mainBackGroundFrom); background: -webkit-gradient(linear, 0% 0%, 0% 100%, from($mainBackGroundFrom), to($mainBackGroundTo)); background-color: $mainBackGroundBase;";
$mainBackGroundSolid = '#1D80AA';
$mainBackGroundImage = 'url("images/image.gif")';
$mainBackGround = $mainBackGroundSolid; # pick background from: $mainBackGroundSolid, $mainBackGroundImage or $mainBackGroundGradient
$mainFontSize = '100%';
$mainLineHeight = '1.2em';

i thought you wanted to change the header background. That is further down in the ‘header…’ section.

uff I change but not appar!

# ------------------------------------------------------------------
# Header sections within lists
# ------------------------------------------------------------------
$itemHeaderBase = '#D8D8C0';
$itemHeaderFrom = '#D8D8C0';
$itemHeaderTo = '#D8D8C0';
$itemHeaderBorder = '1px solid #d8e0e1';
$itemHeaderColor = '#444444';
$itemHeaderHover = '1px solid #d8e0e1';
$itemHeaderGradient = "-moz-linear-gradient(100% 100% 90deg, $itemHeaderTo, $itemHeaderFrom); background: -webkit-gradient(linear, 0% 0%, 0% 100%, from($itemHeaderFrom), to($itemHeaderTo)); background-color: $itemHeaderBase;";
$itemHeaderSolid = '#1B82A8';
$itemHeaderImage = 'url("images/image.gif")';
$itemHeaderBackGround = '#1b82a8';
$headerMessageColor ='#000000';

you changed an overly.  are you sure that overlay is the one in use?  also, sorry did not do line by line comparison, but which background did you change?  solid, image or gradient? and which is use in the main theme file?

did you clear your browser cache?

link to site?

I use winter-blue and I change editor file winter-blue.php it’s right file?

winter blue would be the overlay…  but its part of a theme…  so I assume you are editing the overlay in the theme you are using…

but the header can have three background types:  solid, gradient or image… did you change one or all…  and I would need to look at which one is used in winter blue…

browser cache?  link?

i think it s better gradient..

my site is http://provatoo.net/forum

your currently selected overlay is sky blue…  you said you were editing wintery blue…

so you either need to edit the correct overlay or change the overlay…

oh sorry! now it’s ok…for button how to change color?

which button? buttons are also in the overlay file… change how you want…

if unsure which element to change, look in the main theme file and find which one is used…

Button llike Add topic etc…