Nodes: Change rotation socket color

The current color was just temporary. The new color
is meant to be in between "Vector" and "Boolean"--
close to the vector color but distinct enough to allow
seeing the difference at a glance.

Pull Request: https://projects.blender.org/blender/blender/pulls/111446

source/blender/editors/space_node/drawnode.cc

@@ -1205,7 +1205,7 @@ static const float std_node_socket_colors[][4] = {
     {0.96, 0.96, 0.96, 1.0}, /* SOCK_COLLECTION */
     {0.62, 0.31, 0.64, 1.0}, /* SOCK_TEXTURE */
     {0.92, 0.46, 0.51, 1.0}, /* SOCK_MATERIAL */
-    {0.92, 0.46, 0.7, 1.0},  /* SOCK_ROTATION */
+    {0.65, 0.39, 0.78, 1.0}, /* SOCK_ROTATION */
 };
 
 /* common color callbacks for standard types */