Thank you so much!

Everything is working exactly as I was hoping for now.

Red, Yellow and Green dots are showing up on Task View and problem view with corresponding due dates.

Here's what my 3 styles finally look like now:

Table: Task

Field Name:  Due Date

Value: javascript: var answer = (current.due_date.getDisplayValue() <= (new GlideDateTime().getDisplayValueInternal())) && current.sys_class_name == 'problem_task' && current.state  < '3' ; answer;

background-color: red

Table: Task

Field Name:  Due Date

Value: javascript: var answer = (current.due_date.getDisplayValue() > (new GlideDateTime().getDisplayValueInternal())) && current.sys_class_name == 'problem_task' && current.state  < '3' ; answer;

background-color: yellow

Table: Task

Field Name:  Due Date

javascript: var gdt = new GlideDateTime(); gdt.addDays(7); var answer = (current.due_date.getDisplayValue() > gdt.getDisplayValueInternal()) && current.sys_class_name == 'problem_task' && current.state < '3' ; answer;

background-color: green

Couldn't use your suggest value for "yellow" since it was too long to fit into the window.

But my three styles seem to be evaluated correctly anyway.

Thanks again