I want to change the title and category of the widget posting colours.I don't kn

Hi,
Now are used cloud templates and in this way you can set the blocks using tagDiv Composer and you no longer need the widget section.
If that element is coming from a widget, then you’ll need to use a custom css, if you want, I can help you with this, but I will need a link to your website where I can inspect the elements.
Thank you!

Hi,
Please try this custom css
.td-main-sidebar h3 > a {
color: #767676;
}
.widget a {
color: #767676;
}
You can change the color. The code need to be set in the theme panel > custom code> custom css.
I hope this helps you!