Personally, I think we can try to find a class to record some key parameters, change these parameters and then change the value of the particle system through the parameters.

Common color weapencolor// The color on the sword after use.

Common color basic color; //I didn't use the color on the sword before.

game object king light weapen = game object。 find(" weave light ")； //Particle system on the sword

basic loc = kinglitweapen . particle system . start color； //Save the original color

king light weapen . particle system . start color = weapen color； //Refresh color

Beginners teach themselves. This method may not be very good. If there is a good method, please tell me.

Please correct me if your opinion is inappropriate. Thank you very much.