Hi! We've just released a free content update that updates a bunch of old deco items to be recolorable. There's also a good amount of new deco objects, two new entertainer costumes, and some wall and roof shapes to complete existing building sets among other smaller things. Have fun :)
Version 1.10:

• added ~120 new deco objects
• updated ~150 deco objects to be recolorable and fixed small annoyances
• added Sheriff entertainer
• added Princess entertainer
• added running ad campaigns to ongoing events list
• added option to sort attraction overview list by average queue time
• added option to recolor water on water rides

Features

• Tools to build the theme park of your dreams
  
• A robust, piece-based roller coaster designer to let you build the greatest roller coaster you can think of
  
• Detailed guest behaviors. Watch them take the train to that new section of the park, or read their map to find a ride
  
• Build efficient transport infrastructures to keep your park stocked
  
• Maintain the illusion by hiding utility structures and the inner workings of the park from guests
  
• Extensive support for mods and custom content

• OS: Ubuntu 18.04+. SteamOS+
• Processor: 2.3 GHz Intel i3 or comparableMemory: 4 GB RAM
• Memory: 4 GB RAM
• Graphics: Shader Model 3.0 capabilities (anything with a graphics driver that isn't older than ~2016 probably works)
• Storage: 2 GB available spaceAdditional Notes: This will run the game. but for the best experience something closer to the Recommended Requirements is better

• OS: Ubuntu 18.04+. SteamOS+
• Processor: 3.0 GHz Intel i5 or comparableMemory: 6 GB RAM
• Memory: 6 GB RAM
• Graphics: Dedicated graphics card made after ~2015
• Storage: 2 GB available space