How can I change the font color of error messages?

Thanks so much! I think my browser just needed to reset for me to see it.
Now could you tell me how to change the content and color of the red
highlighted error text? I attached a screenshot of the text.
I would like it to say, "Please enter a valid email address" and for that
text to be in the color: CAB598
Thanks so much!

To change the error message font color, add the following code:

.form-error-message{

color: #CAB598 !important;

}

To change the actual text that is displayed, here is how to do so:

https://www.jotform.com/help/61-How-to-Change-Form-Warnings

Thanks for the help. I was able to change the text content, but it is still
red after I injected the new CSS. Here's what the CSS looks like now and
attached is a screenshot.
.supernova, .jotform-form, .form-all {
background-color : transparent !important;
}
#header_5 {
margin-top : 0px;
}
.header-text.httal.htvam {
background: transparent;
}
.form-error-message{
color: #CAB598 !important;
}
.form-line-active {
background-color: transparent !important;
}
.form-line-error {
background: transparent;
}
.form-textbox, .form-textarea, .form-radio-other-input,
.form-checkbox-other-input, .form-captcha input {
box-shadow : 0px 0px 0px !important;
}
.supernova .form-all, .form-all {
background-color : none !important;
}
.form-all {
-webkit-border-radius : 10px;
-moz-border-radius : 10px;
border-radius : 10px;
border : 0;
-webkit-box-shadow : none;
-moz-box-shadow : none;
box-shadow : none;
}
.supernova .form-all {
border : 0 !important;
box-shadow : none !important;
-moz-box-shadow : none !important;
-webkit-box-shadow : none !important;
}
.form-submit-button {
background : #CAB598 !important;
color : #000000 !important;
border-radius : 10px;
border : 10;
height : 54px;
font-size : 25px !important;
font-family : 'muli';
}
.form-label-top {
display : none;
}
.form-textbox {
padding-left : 10px;
font-size : 20px;
font-family : 'muli';
border : 0;
-webkit-border-radius : 12px;
-moz-border-radius : 12px;
border-radius : 10px;
}
.form-line {
padding-top : 10;
padding-bottom : 10;
margin-top : 0;
margin-bottom : 0;
}
*Sam Unruh*
Owner, Unruh Furniture
cell: 816.808.5259
...

The CSS I referenced should change the text color. 

If you want to change the background color of the warning, add this following:

.form-error-message{

background-color: blue !important;

}

Change the color to your requirements.

Here is how the form would look with both added:

https://form.jotformpro.com/71145229552959

Thanks!
*Sam Unruh*
Owner, Unruh Furniture
cell: 816.808.5259
...