Required Field Asterisk Colour......

You need to add CSS to your theme stylesheet to override the Gravity Forms styles. You can inspect the HTML and see what HTML element wraps the required field asterisk, it's a span with a class applied to it. That class is gfield_required and that is what you need to target with CSS in order to change the color.

Add this to your theme stylesheet, and change the XXXXXXX to the hex value of the color you want to use:

.gfield_required {color: #XXXXXX!important;}

Keep the !important in the value as it will override the Gravity Forms built in style that is set to red.

You can also refer to this guide for samples on targeting specific form elements with CSS.

http://www.gravityhelp.com/documentation/css-targeting-samples

There is also a section dedicated to validation styles.

http://www.gravityhelp.com/documentation/css-targeting-samples/#validation

Yep. That's totally my fault. I specified a class name and not an ID in my sample. Sorry about that. This is the correct version.

body #gforms_confirmation_message {border:1px solid red}

I'll update the sample page too. Thanks for catching that.

I can't access the site, it prompts me for a login. Can you make the page publicly accessible?

To change the color of the main validation error message that appears at the top of your form you would target it like this:

.validation_error {color: #ffffff!important;}

To change the color of the field label when that field has a validation error you would use:

.gfield_error .gfield_label {color: #0E8F8A!important;}

I just tested it on your site and it worked fine.

The CSS you currently has won't work because it includes .textwidget in front of the CSS declaration, and that element isn't contained within .textwidget so that won't work.

Using Firebug which is a plugin for FireFox that lets you inspect HTML/CSS/Javascript on a site and make minor changes to it. It doesn't change the code on the server, just in your browser.

There are other tools like it for Chrome as well, developer tools that let you inspect and debug code.

Thanks Val!