Huge electrical storm last night in my neck of the woods. Wind was furious, hailed for 15-20 minutes, neighbors lost a couple of trees (no damage at my place), and non-stop lightning for almost an hour. And I do mean non-stop. The largest flashes, coming every 10-15 seconds, made the backyard look like it was high noon and it was hard not to look away. It was probably the brightest, whitest lightning I have ever seen.
The hail is what woke me up (not an easy thing to do), and my 9-year old came over to make sure that I didn't get back to sleep (must have been worried about me). We were watching the storm out the big picture window in the bedroom, when suddenly the sky lit up with a big, bright blue flash. We looked at each other to make sure we had both seen the same thing, and then a few seconds later there was a smaller bright pink flash followed by another huge blue flash that lit up the whole sky. Never saw any streaks of lightning from our vantage point, it was all reflected off the clouds.
I had never seen colored lightning before, it's always looked white with maybe a tinge of pale blue, but this stuff was a strong, solid color, very impressive. I don't know how common colored lightning is, but I've never seen anything like it.