mmmmn thought we did this to death...but maybe not, you may as well paint them poker bloody dot pink ...all we can see from the bottom up is a silhouette and the color of a silhouette against a sky is black....i am convinced of this.and pretty sure all the pole manufactures are as well .But it is a free world and if you want go paint them,spray them or dip them your choice.as for birds being gray they are still a silhouette against the sky.
by the by this is my opinion i am not trying to force it on any one