CONSOLE MESSAGE: line 20: TypeError: Result of expression 'document.styleSheets[0].cssRules[0].variables' [undefined] is not an object. layer at (0,0) size 800x600 RenderView at (0,0) size 800x600 layer at (0,0) size 800x34 RenderBlock {HTML} at (0,0) size 800x34 RenderBody {BODY} at (8,8) size 784x18 RenderBlock {DIV} at (0,0) size 784x18 [color=#008000] RenderText {#text} at (0,0) size 163x18 text run at (0,0) width 163: "This text should be green."