Color of text in footer (widget)

Hi there, I’m totally new to Wordpress and also to the wpzoom, it’s learning by doing.
I’m sorry if I have questions which are quite basic but I hope you can help me anyway.
I created a menu (text with links) in the footer by using widgets in columns. I can see them and also the links work but I can’t change the color.
Under costumize footer, there are the colors for links and text color, but the change is not happening.
Under costumize widgets, I can only change the color of titles, which I don’t use.
Does someone know this problem and can help me?
Thank you!