added check to see if terminal suports manipulaing color definitions

output/terminal_ncurses.c

@@ -17,27 +17,27 @@ struct cols {
 
 struct cols parse_color(char *col) {
 	struct cols ret;
-	int has_colors = 0;
-	//if (has_colors() == TRUE) {
-		has_colors = 1;
-	//}
-	// Only use the hexvalues if we are certain that the terminal
-	// supports color redefinition, otherwise use default colours.
-	if (col[0] == '#' && has_colors == 1) {
+
+	if (col[0] == '#') {
+		if (has_colors() != TRUE) {
+			cleanup_terminal_ncurses();
+			fprintf(stderr,
+				"Your terminal can not manipulate colors, please use one of the predefined ones.\n");
+			exit(EXIT_FAILURE);
+		}
+
 		// Set to -2 to indicate color_redefinition
 		ret.col = -2;
 		++col;
 		sscanf(col, "%02x%02x%02x", &ret.R, &ret.G, &ret.B);
 		return ret;
-	} else if (col[0] == '#' && has_colors == 0) {
-		ret.col = -1;
-		return ret;
-	}
+	} else {
 
 	//using predefined colors
 	ret.col = 0;
 
 	return ret;
+	}
 }
 
 int init_terminal_ncurses(char *color, char *bcolor, int predefcol, int predefbgcol) {