Absolutely correct, concerning laser beams. And, rather than just going by what someone wrote, I've actually tested both the red and green laser beams, and green, especially outdoors, shows up much better.Well, the human eye can see green better than red....the reason behind all the green lasers now, versus the red ones.
That's one thing that concerns many folks about using some sort of paint on the front sight. Besides wearing off quickly, the flat surface does more to reflect "glare" from the sun or indoor lighting. The same situation existed when Smith & Wesson installed inserts in their revolvers front sight blade. The top of the "RED" insert they used is flat, and in bright light, it glared rather than made for easy acquisition. S&W never used "glow orange inserts" as some mistakenly claimed in another thread.I used the green glo paint and it is really good in low light but outside in bright light it isn't so good.
I use a pink fluorescent paint that comes in small bottle at WalMart fabric dept. Actually it stays on the sight better than the glolight stuff did. It also is fairly cheap price at WM. The pink color shows up good in daylight also.