This Mod allows you to paint the logic and timer blocks.
How to install: Step 1: Extract all files in the zipped folder. Step 2: Find the scrap mechanic game files and get to where you can see the folders: cache, challenge data, challenges, data etc, etc. Step 3: Find the mod file called data and copy it. Step 4: paste it in the game files area and press replace when it asks you about replacing 6 files (these are the texture files)
Now you have your own paintable logic blocks and timers!