If you are like me, and you don’t want to update every element in 72 layouts of the app that you are designing, after client’s request to change the colors, then use the color variables.
They will speed up your workflow in over 9000 times.
I researched the tools and techniques currently available, and the best way is to use the Prisma plugin for Photoshop. They have 30 days trial, but then it costs about 30 eur and that’s totally worth the investment!
The only drawback is that it does not support shape’s strokes, but the creators will take care of that soon.
More details in the video:
There is a better and FREE tool for this, it is called Ditto plugin. It is available only for CC 2015, though.