Do they have designated colors or do they change color depending on the amount of UV absorbed?
383952
They have designated colors. They all appear the same semi-translucent off white color when not exposed, but a "yellow" bead will always turn yellow, a bead that is "red" will always appear red under UV and so on. The color will get more vibrant with an increase in the intensity of UV, but will always turn the same color it did originally. This bag has an assortment of colors.
679919
Yes. They change from red, blue, green, yellow, and purple all at different times.
1225899
Not so far. I have had three of them since April, and they are still the same color as when I bought them. I've had others in he past that have faded, but these look good still. We get a lot of sun during summers in Virginia.
97033
Each Model is Made for the Year and Type of Seats, so if you specify the year and model you should not have a issue. If they are exposed to direct sun all the time they are going to fade like any material. Of Course Color matters here, Red would fade the most and grey the least. All I am saying is nothing can resist the sun indefinitely.
2040990
sorry I awalys have worn sandals, but I think the lighter color should reflect UV rather than absorb it as a darker color would
1884986
Mine are on a wall that get direct sunlight only in the AM, but have no signs of fading. We love them!
304580
I would google ultraviolet vs led and read the answers. A good one was this one www.nsinails.com/.../led-vs-uv-by-rise'-c...Hope that helps!!Crystal
1366999
If you hold them under a white light you see the blue and purplish light being reflected back. They definitely help with that part of the color spectrum.
325710
Yes, mine are turning green from exposure to sun and water, but I rather like the change of the color, It gives it character and it isn't a particularly bright shade of green either.
2000363
Hi Amanda, These subsmersible light is multicolor, means every single unit is multicolor. It will change the color by it self. Thank you
382515
They are black but depending on exposure to sunlight over time, it could fade a little bit.
898195
In the pack that I got on my order, they were all the same color. Compared to another pack I bought at a later date, there was a slight difference. The second pack seemed to be darker, but only slightly. That was months in between orders also. Each pack was colored the same though.
1342598
There is very little difference in the spectrum between 660 and 630 nm so you will not be able to notice a color difference. We're very happy with these lights!
711437
You can run 'em 24/7 if you need to. They get warm, but not hot. I'm guessing a bigger issue is that they (intentionally) put in some UV LEDs to simulate sunlight, so you may want to have UV absorbing glasses when working around the light.
1163767
It has a uv bulb you have to change every 250 days or so. It's stated in the instructions provided.
1446231
Not this one - when they are clear they tend to reflect some glare. I believe there is an anti-glare "color" as well
1707708
Not sure, but the orange doesn't glow, Orange is for daytime, in the center of the Orange is green night sight that glows . It's pretty cool how it transition