Need help editing my template

Good day

I would like to change the colour of certain module positions.
What I have done is setup user 1-4 modules directly under the carousel (the moving banner), and I would like to make them the same blue as the selected menu item for the main menu. If possible if it could also be a bar across the webpage. This will be a static feature of the home page. Finally if I could also change the text colour to match the main menu.

I am knew to Joomla and hope I have described correctly what I would like to achieve

Thanks

Every module position container has class mp_<postion name>

So you can add scc like this in template_css.css

.mp_<postion name>{
background:...
}

discrete example , let say right to be blue:


.mp_right{
background:blue;
}