Since switching to Meprolight Tritium sights on my Kimber Compact Stainless it has been very difficult for me to see the front sight with these old eyes, regardless of the lighting conditions. I have no such problem with the Tritiums on my Springfield EMP or my Wilson CQB that has a gold bead front and rear U groove Battlesight.
With nothing much to loose I went to Testors model paint for a solution. I painted the rear capsules with flat black and the front sight completely in safety orange. Today at the range it made all the difference in the world.
I'm holding lefty because the camera's shutter button is on the right