(svn r13994) -Codechange: replace a few rogue magic numbers with Colours enum values

src/gfx.cpp

@@ -47,7 +47,7 @@ int _pal_count_dirty;
 Colour _cur_palette[256];
 byte _stringwidth_table[FS_END][224]; ///< Cache containing width of often used characters. @see GetCharacterWidth()
 DrawPixelInfo *_cur_dpi;
-byte _colour_gradient[16][8];
+byte _colour_gradient[COLOUR_END][8];
 bool _use_dos_palette;
 
 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);

src/gfx_func.h

@@ -172,7 +172,7 @@ extern DrawPixelInfo *_cur_dpi;
  * All 16 colour gradients
  * 8 colours per gradient from darkest (0) to lightest (7)
  */
-extern byte _colour_gradient[16][8];
+extern byte _colour_gradient[COLOUR_END][8];
 
 extern bool _use_dos_palette;
 

src/graph_gui.cpp

@@ -159,7 +159,7 @@ protected:
 		assert(GRAPH_MAX_DATASETS >= (int)NUM_CARGO && GRAPH_MAX_DATASETS >= (int)MAX_PLAYERS);
 		assert(this->num_vert_lines > 0);
 
-		byte grid_colour = _colour_gradient[14][4];
+		byte grid_colour = _colour_gradient[COLOUR_GREY][4];
 
 		/* The coordinates of the opposite edges of the graph. */
 		int bottom = this->gd_top + this->gd_height - 1;