Potion break particles are like a normal water bottle, here i have an example of a night vision bottle being trown in the ground. If you see, the colour is green, but the bottle particles are dark blue, like a water bottle, and in my oppinion it needs to be green, like a night vision bottle. I don't know if this is bug or feature, but if it is a feature, the bottle breaking particles could be the colour of it's bottle effect. With normal Splash water bottles, the bottle breaking particles match, and with the other Splash bottles that have the same colour as the normal water bottle the colour match too.

To reproduce, trow a Splash Potion (recommend using Night Vision, you can see it better) in the ground, then see the bottle breaking particles. You will see that they are blue, and they do not match their bottle colour.