Changing Individual Heading Colours

I know that the colours of the headings “Titles” (h1-h2) and “Subtitles” (h3-h6) can be changed in the Theme Settings General Tab, but for the site I am creating I need to change each of the Headings to an individual colour.

In the CSS Tab in the Theme Settings I have written:

h1 {colour: #818f31;}
h2 {colour: #ab3535;}
h3 {colour: #338d96;}
h4 {colour: #c47514;}
h5 {colour: #5d5b8a;}
h6 {colour: #000000;}

And I cannot see why this wouldn’t be enough to make it work….but it doesn’t…

Any help and suggestions will be greatly appreciated 🙂

https://wordpress.org/themes/custom-community/