You can make a Roblox default set look green by changing the default appearance of the item in Roblox Studio , then saving it as the new default. Roblox’s newer “user provided default instances” feature lets creators customize default properties for inserted objects like Parts, including color, and then reset them later if needed.

How to do it

  1. Open Roblox Studio.
  2. Go to File > Beta Features.
  3. Turn on User Provided Default Instances.
  4. Restart Studio.
  5. Insert the object you want, like a Part.
  6. Change its Color to green.
  7. Select the object, then go to Edit > Save as Default Part.
  8. After that, new parts you insert will use that green default.

Important note

This works for Studio objects and defaults , not for changing every player’s avatar default look. If you meant the avatar’s default clothing or body color, that is a different process and usually involves avatar customization rather than Studio instance defaults.

If you mean avatar green

If your goal is a green default outfit/avatar , you usually need to edit the avatar in the Roblox avatar editor and choose green clothing, skin tones, or accessories manually, since there is no one universal “make default avatar green” button.

[3][5] [9][4]
MeaningWhat to do
Studio default partEnable default instances, set the Part color to green, then save it as default
Avatar default lookUse avatar customization and pick green items or skin tones manually
TL;DR: In Studio, turn on the default-instances beta, recolor a Part green, and save it as the default; for avatar defaults, you need to customize the avatar itself.