Editable Indicators in Atas (like Pinescript)

I think it would be a great idea to make indicators easily editable and importable by making them open source and having a script editor implemented in Atas (like pinescript for tradingview) so users can write their own indicators, or modify existing indicators and tweak them.

Maybe also a good idea to make the language the same as pinescript so that you can import your own indicators (as Tradingview is the most popular and has the biggest custom indicator library)

In addition it would also be nice to be able to create multiple templates for indicators, for example a template for dark mode where the line is white, and a template for white mode were the line is black.