Create transparent color object

I was thinking of creating water in a transparent light blue color so that when my player enters the water, it changes a little to light blue, I don’t know if this is possible in gdevelop, could you help me?

You can do this in so many ways
add a png with light blue with transparency.
Or add an image light blue solid then add action to set the Sprite opacity to 120 i.e.
don’t forget to set z.Order of the water above the player z.Order