My buddy Sam put on a fireworks show for New Year's Eve.
What is he trying to say? As a bonus, what's his surname?
Click on image for colorblind-friendly version.
I think he is trying to say
HI 2026
Because your friend is supposed to be
Samuel Morse
Therefore
The explosions are representing dots and the rockets are dashes
Then we
group them in colours left to right using the ROYGBIV order:
Red: dit dit dit dit
Orange: dit dit
Yellow: dit dit dah dah dah
Green: dah dah dah dah dah
Blue: dit dit dah dah dah
Indigo: dah dit dit dit dit
Then lastly
we translate this using morse code cipher.