CoronaColorCorrection-Auto is a 3ds Max script from SimonBourgeois that adds and tweaks Corona Color correct nodes. You can add a Corona Color correct with any specified values on any selected material slot, including Diffuse, Bump, Roughness, Translucency and Self Illumination, and any existing bitmaps are kept inside the color correct. Parameters can be changed afterward.
Randomization is built into each parameter. The randomize option sets a random value on the existing material, so every object using that material picks up the new color or bump value. A separate 'new material' option at the bottom of the script scatters random values across the selected objects' materials, creating a new material for each selected object.
Installation follows the usual script method: drag and drop into the viewport, then open Customize, Customize User Interface, Toolbar, under the 'SimonScripts' category. The script is tested on 3ds Max 2023 with Corona 9 and 3ds Max 2024 with Corona 10, and it is also included as part of the Corona Material Automator.