filled out Scene::processLight(), added color keyword to light specification

git-svn-id: svn://anubis/fart/trunk@171 7f9b0f55-74a9-4bce-be96-3c2cd072584d

parser/parser.yy

@@ -198,6 +198,9 @@ light_item: POSITION vector {
           | SPECULAR vector {
                 $$ = new SpecularNode($2->getVector());
             }
+          | COLOR vector {
+                $$ = new ColorNode($2->getVector());
+            }
           ;
 
 material: MATERIAL LCURLY material_items RCURLY {