Hair Dye Answers

I just dyed two purple streaks on either side of my head (underneath, not on top).
I have a little hair dye left over, so I was thinking of dyeing the tips of my bangs.
Would this be weird, or ok?
It’s kind of a lavender color, & I have dark brown hair with short side bangs that go across my forehead (but not straight).

I have sweeping bangs emoish (i hate stereotypes) & about 3 inches past my should light brown, dark blonde whichever hair, if i dye the tips of my bangs & hair Ice blue or dark purple with semi permanent dye, will it change it permanently? i dont want it to be a different color wen the dye is gone & i dont want it to be dry either. what should i do?