[Feature Request] colorize styles target

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

I am using monaco.editor.colorize to colorize text and set the result to an element in iframe (I tried monaco.editor.colorizeElement but it fails for nodeValue is null, so I just need to pass innerText instead and set innerHTML with the result).

The colorization seems to set monaco-colors style on the document the script is called from, however, I need it to apply to the iframe where I use the colorized HTML.

I suggest that either a document instance can be passed to the API to which the styles will be added, or the styles are returned as a part of the API result.

My current workaround is to take the monaco-colors style element inside the promise handler from the call-site document and insert it in the iframe document.

Monaco Editor Playground Link

No response

Monaco Editor Playground Code

No response

Start with the monaco.editor.colorize and monaco.editor.colorizeElement APIs described in the issue, then inspect how the monaco-colors style is added to the calling document. Compare the proposed document-target and returned-styles approaches, using the iframe scenario as the acceptance case. Done means colorized HTML can apply its styles in the iframe without the current workaround.