Yeah, they're a really weird light, and the colour changes depending how you look at it. It doesn't look that purple in the flesh though, I think it's the UV coming out more in the photos - it's more of a white colour with tinges of red when you look at it with the naked eye. And you're right, it does appear to penetrate right into the plant a lot better.
I do like the berry bomb. It's a really nice smoke and is very potent, but it's quite creepy - it takes a good few minutes for it to settle in, and then you go to do something and you suddenly realise you're really stoned when it takes you about three times longer than it should to do what you wanted! You can function on it to an extent which is good, it's just not great for doing anything that requires a lot of thought, unless you allow yourself plenty of time to think!