new file: Makefile

new file:   color
	new file:   color.c

Makefile

@@ -0,0 +1,4 @@
+make:
+	gcc color.c -lX11 -o color
+debug:
+	gcc color.c -lX11 -o color -ggdb

color.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+
+#define START_COLOR 0xffffff
+
+int main() {
+  Display *display;
+  Window window;
+  int screen;
+
+
+  if((display = XOpenDisplay(NULL)) == NULL) {
+    printf("There was an error opening the screen: %s\n", strerror(errno));
+    exit(errno);
+  }
+  
+  screen = DefaultScreen(display);
+
+  window = XCreateSimpleWindow(
+      display,
+      RootWindow(display, screen),
+      10, 10,
+      1000, 1000,
+      0,
+      BlackPixel(display, screen),
+      WhitePixel(display, screen));
+      
+  XMapWindow(display, screen);
+  XFlush(display);
+
+
+
+}
+