What Am I?

I saw this little creature on Friday's hike up Robertson Mountain.  In fact, I saw a lot of them.  Can you guess what it is?

You have at least a million picks
Because my legs add up to six

There are some insects you might fear
But fear not when I flutter near

Because I neither sting nor bite
So there's no reason for your fright

In fact I often cause delight
For my colors are very bright

Despite my name I don't like butter
It's after nectar that I flutter

I'm mostly black but with some blue
With orange and red I am marked, too

OK - I think you know the general type of animal I saw.  Getting the exact species will be tough because there are a lot of variations with this color.  In found a number of different ones when I Googled it.  So take your best guess
AND
S
C
R
O
L
L
DOWN!

Red spotted purple butterfly
Is what I am - a handsome guy!

I saw many butterflies on the hike of several different species, but I saw more of these than anywhere else.  I especially saw them after crossing a stream as they gathered on moist earth, I assume to get a drink.