Need an Applescript that will Color Code paragraphs , Red, Green, Yellow; respectively in Apple Notes

The Notes scripting dictionary allows for the ability to create a new note with a body resource containing text HTML source. Like this:

The AppleScript code that produced this:

use scripting additions

tell application "Notes"
	set T1 to "first paragraph text"
	set T2 to "second paragraph text"
	set T3 to "third paragraph text"
	set T1_red to my colorize_paragraph(T1, "red")
	set T2_green to my colorize_paragraph(T2, "green")
	set T3_yellow to my colorize_paragraph(T3, "yellow")
	
	set colorHTML to T1_red & T2_green & T3_yellow
	
	make new note with properties {body:colorHTML, name:"color test"}
end tell
return

on colorize_paragraph(atext, acolor)
	set html_text to "
	<p style=\"color:" & acolor & ";\">" & atext & "</p>"
	return html_text as text
end colorize_paragraph

I have added a new handler that prompts you for the color coded paragraph to paste. Only the last few words of the pasted paragraph will appear in the display dialog but the entire paragraph makes it into the new note. I have also added some spacing and font size setting to clean up the paragraphs.

use scripting additions

tell application "Notes"
	
	set T1_red to my colorize_para("red")
	set T2_green to my colorize_para("green")
	set T3_yellow to my colorize_para("yellow")
	
	set colorHTML to T1_red & T2_green & T3_yellow
	
	make new note with properties {body:colorHTML, name:"color test"}
end tell
return

on colorize_paragraph(atext, acolor)
	set html_text to "
	<p style=\"font-size:14pt;color:" & acolor & ";\">" & atext & "</p><br />"
	return html_text as text
end colorize_paragraph

on colorize_para(acolor)
	set atext to text returned of (display dialog "Enter " & acolor & " text here: " default answer "")
	
	set html_text to "
	<p style=\"font-size:14pt;color:" & acolor & ";\">" & atext & "</p><br />"
	return html_text as text
end colorize_para

Of course, the simpler approach than code would be to just paste your paragraph into Notes. Select that content, and then press shift+command+C to open the color chooser, and then select red. With additional paragraphs, repeat choosing green and yellow colors.

I copied your script verbatim and ran it against the same pasted document content that I used to produce the tricolor Notes content I posted earlier. Got that result, with paragraphs colored green, red, and yellow in that order.

I am using a text document, where each new paragraph is preceded by just a newline, or a blank line. Makes no difference in the result.

I see no evidence of alternating line colors here with Notes on macOS Sonoma 14.3.

Not my result with the identical AppleScript code. Review the source content you are pasting into the script dialog.

My source content is three paragraphs of text from a plain text file. Each paragraph is either separated by a newline, or a blank line.

AppleScript expects plain text, and copying content from a word-processing document or another non-plain text source will likely introduce control characters and attributed text that interferes with AppleScript's handling of that content.

I just fired up my 2011 Mac mini running macOS High Sierra 10.13.6, copied your unchanged AppleScript into that script editor, and using the same plain text as I have done before, the script produced the separate colored paragraphs in Apple Notes.

What are you really up to? Not about Notes or your proposed solution using Notes, but what issue or requirement are you looking to solve? Terminal session with a shell script can show colored text, for instance.

Maybe write a small Swift app? Or Python or whatever?

If this requirement really centrally involves Notes, maybe pick an alternative app better suited to your (unstated) goals? Notes has gotten some improvements, but it’s still intentionally a simple and limited tool.

PS: Mac and Pasting Text: in various tools, Command-Shift-V removes most formatting

The name and paragraph text can be anything you wish. It creates a new note with the body text shown. The <p></p> pair signify an HTML paragraph.