I see your acid is a very yellow, did you know there is an acid color in factorio?
data/core/prototypes/utility-constants.lua shows the color to be
{name="acid", player_color={r=0.559,g=0.761,b=0.157,a=0.5}, chat_color={r=0.708,g=0.996,b=0.134,a=0.5}}, on line 97.

You can change your player character to that color with the command. I think it would neat to use this same color for your acid pools and acid stream. The color has a little more green to it

When i think of acid I think about the Aliens movies where the monsters had acid blood and then how the spitters shoot acid in factorio.

Thanks for the fun mod!