Brass colour now distinct from gold.

global_defs.scad

@@ -60,7 +60,8 @@ grey60                          = [0.6, 0.6, 0.6];
 grey70                          = [0.7, 0.7, 0.7];
 grey80                          = [0.8, 0.8, 0.8];
 grey90                          = [0.9, 0.9, 0.9];
-brass                           = [255/255, 215/255, 0/255];
+gold                            = [255/255, 215/255, 0/255];
+brass                           = [255/255, 220/255, 100/255];
 silver                          = [0.75, 0.75, 0.75];
 
 /*