Have multiple comment colors/edit the test color coding

[ptillisch]

OK. The "keywords.txt" custom keyword highlighting system mentioned by LarryD is only for Arduino IDE 1.x.

However, it does use the same powerful general purpose C++ syntax highlighting system as is built into VS Code:

GitHub - jeff-hykin/better-cpp-syntax: 💾 The source of VS Code's C++ syntax highlighting

You might be interested in the information shared here about the possibility of installing 3rd party VS Code themes or even your own custom themes in Arduino IDE 2.x:

Personal themes

Hi @F6EEQ. Arduino IDE 2.x uses a completely different theme system than Arduino IDE 1.x, so none of the information about the 1.x theme system is applicable in any way to Arduino IDE 2.x. Arduino IDE 2.x is built on the Eclipse Theia IDE framework, which allows it to use VS Code themes. Table of Contents Install a Pre-Made Theme Find Theme Install Theme in Arduino IDE Make a Custom Theme Generate VS Code Extension Template Design Theme Manually VS Code Theme Studio Install Theme in A…