Added ctr.gfx.color lib; color.setDefault and color.getDefault working

source/color.c

@@ -0,0 +1,33 @@
+#include <sf2d.h>
+
+#include <lua.h>
+#include <lauxlib.h>
+
+u32 color_default = RGBA8(255, 255, 255, 255);
+
+static int color_setDefault(lua_State *L) {
+	color_default = luaL_checkinteger(L, 1);
+
+	return 0;
+}
+
+static int color_getDefault(lua_State *L) {
+	lua_pushinteger(L, color_default);
+
+	return 1;
+}
+
+static const struct luaL_Reg color_lib[] = {
+	{ "setDefault", color_setDefault },
+	{ "getDefault", color_getDefault },
+	{ NULL, NULL }
+};
+
+int luaopen_color_lib(lua_State *L) {
+	luaL_newlib(L, color_lib);
+	return 1;
+}
+
+void load_color_lib(lua_State *L) {
+	luaL_requiref(L, "ctr.gfx.color", luaopen_color_lib, false);
+}