you can customize the fluid color and make it a fake one
with the kits you will be given a barrier, the barrier removes the Custom Fluid if there is too many, you can do
you can also change the color of the fluid by using:
/data modify entity @n[type=text_display,tag=Custom (FLUID) ] text.color set value " (COLOR/HEX) "
/data modify entity @n[type=text_display,tag=CustomWater] text.color set value "Green"