To break up vertex color blending, you can add a noise map that you subtracted by 1 to a vertex color that you multiplied by 2.

In this example it is used for a material layer blend function.
But you can utilize it also in normal functions or directly in materials.

Use the output as an alpha to drive some kind of lerp or blend.

I needed a system that changed the color every other (persistent) particle.

This is how it worked for me.

ok, since this small screenshot does seem to not explain all too well.

here some walkthrough:

- just go to "initialize particle"

- then press the right rollout in the color section and set it to "select linear color from array"

- then press the right rollout in the  "direct array index" and set it to "return particle ID attributes"

- then be set
see the whole thing here

i made this tutorial since the timeline solution seemed to be an approach no one yet covered

A next tutorial will cover an interact system that incorporates flickering lights and a light switch that can be used by the player.

I revisited the simple water shader and added a fade out for opacity and refraction. So it's slightly more expensive but especially for lake or river water this helps with the water intersecting the landscape.

Copy and paste the material here:

https://blueprintue.com/blueprint/l7di5oxt/ 

Here is another oldie i made years ago.

It's about wrapping polies around other polies.

Could still be relevant i guess, so i post it here again.

i made a small snippet explaining the 3D widget material.

it wasn't obvious to me how it worked once i had to change it, so i thought it might help to share my findings

When you want to change a 3D widget material of a 3d widget component in a blueprint, in order to make it e.g. look like a holographic material, you have to understand how the parameters in this material work.

This video covers the importance of the correct naming of those parameters. 

copy the custom widget material from this pastebin 

https://blueprintue.com/blueprint/_s6boszl/ 

Useful vector math friends helped me with.
Usually this friend is Jan Kaluza :)  Check out his ressources

https://twitter.com/jkashaar 
https://twitter.com/i/events/1064095060319498240 
https://www.artstation.com/broadstrokes 
https://www.youtube.com/channel/UCQo-M_M9BVl6ByloRxAMiYQ 

Find Min Max values from Component Bounds for "Make Box" in the blueprint editor

this video tries to explain how to detect physical surface types of materials the player walks on and set some movement component settings accordingly to fake a slippy ground. i.e. make the player slide on ice or any other slippy surfaces.