Use different color for extensions and custom blocks · Issue #1336 · scratchfoundation/scratch-blocks · GitHub

How To Customize Blocks In Scratch: An Easy Guide - BrightChamps Blog

Extensions, Getting started with Scratch, Scratch

How To Customize Blocks In Scratch: An Easy Guide - BrightChamps Blog

Size of insertion marker C block with wide contents · Issue #1795

How To Make Your Own Extensions In Scratch Using JavaScript [2022

Addons - Scratch Addons

Scratch Custom Blocks: A Beginner's Guide

A Scratch script highlighting the different block colours and

Block appearance in forums should resemble Scratch 3.0 block

Color of my block is different from Scratch 3.0 · Issue #303

ScratchLab: new block colors · ScratchAddons ScratchAddons

Hacked Blocks - Support Argument Hacking · Issue #1030

Block appearance in forums should resemble Scratch 3.0 block

Allow custom blocks to be shaped like C blocks (if, repeat

Custom block deformation with Magyar language · Issue #1658