Index: trunk/src/layer.c
===================================================================
--- trunk/src/layer.c	(revision 18030)
+++ trunk/src/layer.c	(revision 18031)
@@ -444,6 +444,21 @@
 	return pcb_layer_rename_(&data->Layer[layer], pcb_strdup(lname));
 }
 
+int pcb_layer_recolor_(pcb_layer_t *Layer, char *color)
+{
+	if (Layer->is_bound)
+		return -1;
+	free(Layer->meta.real.color);
+	Layer->meta.real.color = color;
+	pcb_event(PCB_EVENT_LAYERS_CHANGED, NULL);
+	return 0;
+}
+
+int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *color)
+{
+	return pcb_layer_rename_(&data->Layer[layer], pcb_strdup(color));
+}
+
 #undef APPEND
 
 static int is_last_top_copper_layer(pcb_board_t *pcb, int layer)
Index: trunk/src/layer.h
===================================================================
--- trunk/src/layer.h	(revision 18030)
+++ trunk/src/layer.h	(revision 18031)
@@ -252,11 +252,13 @@
 /* Return the default color for a new layer from the config */
 const char *pcb_layer_default_color(int idx, pcb_layer_type_t lyt);
 
-/* Rename an existing layer by idx */
+/* Rename/recolor an existing layer by idx */
 int pcb_layer_rename(pcb_data_t *data, pcb_layer_id_t layer, const char *lname);
+int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *lcolor);
 
-/* changes the name of a layer; memory has to be already allocated */
+/* changes the name/color of a layer; string has to be allocated by the caller (pcb_strdup) */
 int pcb_layer_rename_(pcb_layer_t *Layer, char *Name);
+int pcb_layer_recolor_(pcb_layer_t *Layer, char *color);
 
 
 /* index is 0..PCB_MAX_LAYER-1.  If old_index is -1, a new layer is