How to change the color of PNG files in bulk?

Question

PNG

Good day to all!
In photo processing, a layman. In general, there is animation from PNG files in the form of directional arrows, twists, etc. Redrawing them all, or repainting them all is also not an option - time is running out.

Is there an easier option to replace their colors?

Thank you all in advance.

ps You can see the template here: https://motionarray.com/premiere-pro-templates/cor...

Answer 1

Decent image viewers (XnView, FastStone) have the Batch Convert function, which takes a folder and a list of transformations to be performed as input, and outputs corrected files as output.

Answer 2

I'm trying. Doesn't go. XnView has a replace color function. But something hasn't changed.