 So you want your particle to change from one color to another, not a problem. Under particle update if you add color and then up at the right click the down arrow and say color from curve. Then you will see the colored timeline. Now the left side is the color the particle will start and the right side is the color the particle will end. By default it is set to white and the only difference is the transparency is completely visible in the beginning and then becomes completely invisible at the end. Transparency is controlled with these bottom knobs here. So if we play you can see it starts visible and then becomes invisible towards the end of the particle's lifetime. Now if you click the top though you will be able to change the color to whatever you want and as usual you can manually overload the colors in order to get that emissive lighting. So if we set it to something like pinkish red at the left and green on the right now you can see our particles will change from pink to green and at any point you can add new points by left clicking in the middle. So if we add a blue color in the middle now you can see the color will change from pink to blue to green. Also if you want just two different colors happening at the same time you can probably do it with modules but another easy way you could do it is to literally just set it as one color and then just duplicate the whole thing and then change the color of the duplicate. So you can see I have one set to red one set to green and when they play together now you get both red and green at the same time. Hope that helps and as always hope you have a fantastic day and I'll see you around.