A Question...

Hi, I've been seeing these magnificent blue spark type things zooming around in the sky for a while, and I'm not sure what it is or why I'm seeing it. It's not just a few either, the entire sky is lit up with them. It's really a beautiful sight. Sometimes they could have slight tints of other colors too. I could be in any mood, anywhere and it's always at daytime, never at night. One particular time it was cloudy, but a nice day outside, so I went out to just sit down and think. I was watching them and then they began to change into these small white blob type things and were also zooming around. It's tough to describe, but its really just amazing. I'm pretty sure I'm not going crazy or anything of the sort. Anyone have any ideas?