move structure definition of Color to header file

Signed-off-by: Chris Michael <cp.michael@samsung.com>

src/bin/colors.c

@@ -1,13 +1,6 @@
 #include "private.h"
 #include "colors.h"
 
-typedef struct _Color Color;
-
-struct _Color
-{
-   unsigned char r, g, b, a;
-};
-
 static const Color colors[2][2][12] =
 {
    { // normal

src/bin/colors.h

@@ -1,6 +1,13 @@
 #ifndef _COLORS_H_
 # define _COLORS_H_ 1
 
+typedef struct _Color Color;
+
+struct _Color
+{
+   unsigned char r, g, b, a;
+};
+
 void _colors_init(Evas_Object *obj, Evas_Object *bg);
 void _colors_standard_get(int set, int col, unsigned char *r, unsigned char *g, unsigned char *b, unsigned char *a);