trouble changing sub heading text color

Hello,

Thank you in advance for your support! From researching other tickets, I’ve inserted the code:

.av-subheading {
color: white;
}

…with no avail. It works with other colors like red but when I try white it is the default grey color. There is another thread talking about changing the opacity which lost me… Does it have something to do with that?

Do I have the option of changing the color in general settings and where?

Thank you!