Here's a useful little tool for Blender in case you want to texture your objects by assigning materials with different colors to distinct polygons. This add-on called Paletter will let you bake such setup to texture, reassign UV and keep one material instead of many.
To use the plugin, you simply need to download Paletter.py and then install it in Blender: Edit -> Preferences -> Add-ons -> Install -> Paletter.zip
Then, you will have Paletter panel in the Material Properties tab. Learn more and get the tool here. Don't forget to join our new Telegram channel, our Discord, follow us on Instagram and Twitter, where we are sharing breakdowns, the latest news, awesome artworks, and more.