Fix ng2 attributes not being highlighted like other HTML attributes correctly

Quick Apply

Download either HTML-ng2.sublime-package or HTML.sublime-package depending on if you want to keep it separate from stock HTML syntax or not. (Applying as HTML.sublime-package will override default HTML package.) Copy the downloaded package to Library/Application Support/Sublime Text 3/Installed Packages. (Tip: You can open this directory quickly by bringing up Command Palette (Cmd+Shift+P) and typing 'Preferences: Browse Packages').

Sublime Text 3 will probably show an error message about HTML syntax not being able to load, then you'll be fine. If not, try quitting the app and relaunching it.

Manual Edit

ADD: You can also install PackageResourceViewer from Package Control to open up and modify the package contents directly without having to manually rename, unpackage and copy.

1. Find Sublime Text 3.app in Applications, View Package Contents
2. Open Contents/MacOS/Packages/HTML.sublime-package (Rename to .zip, unpackage it)
3. In HTML.sublime-syntax file, add following under tag-event-attribute:

tag-ng2-attribute:
  - match: '\s+(([\[\(][a-zA-Z0-9.%:-]+[\]\)]|(\[\()[a-zA-Z0-9.%:-]+(\)\])|[\*#][a-zA-Z0-9.%:-]+)\s*(=)\s*)'
    captures:
      1: meta.attribute-with-value.html
      2: entity.other.attribute-name.ng2.html
      3: punctuation.separator.key-value.html
    push:
      - match: '"'
        scope: punctuation.definition.string.begin.html
        set:
          - meta_scope: meta.attribute-with-value.html string.quoted.double.html
          - match: '"'
            scope: punctuation.definition.string.end.html
            pop: true
          - include: entities
      - match: "'"
        scope: punctuation.definition.string.begin.html
        set:
          - meta_scope: meta.attribute-with-value.html string.quoted.single.html
          - match: "'"
            scope: punctuation.definition.string.end.html
            pop: true
          - include: entities
      - match: '(?:[^\s<>/''"]|/(?!>))+'
        scope: meta.attribute-with-value.html string.unquoted.html
      - match: ''
        pop: true
  - match: '\s+([\[\(][a-zA-Z0-9.:-]+[\]\)]|(\[\()[a-zA-Z0-9.:-]+(\)\])|[\*#][a-zA-Z0-9._:-]+)'
    captures:
      1: entity.other.attribute-name.ng2.html

This is basically a copy of existing tag-generic-attribute: with modified regexp for match: to target Angular 2 attributes starting with * or #, enclosed in [] or () or [()].

4. At the bottom under tag-stuff: add:

- include: tag-ng2-attribute

5. Save the modified package as .sublime-package and copy to Library/Application Support/Sublime Text 3/Installed Packages. If you want to keep the HTML-ng2 package separate from stock HTML package, rename HTML.sublime-syntax file to something different like HTML-ng2 so it won't overwrite the default one.

To add custom color to your Color Scheme

1. Open up the package for the Color Scheme you're using, find the *.tmTheme file.
2. Add following code inside <array>:

<dict>
	<key>name</key>
	<string>Tag ng2 attribute</string>
	<key>scope</key>
	<string>entity.other.attribute-name.ng2</string>
	<key>settings</key>
	<dict>
		<key>fontStyle</key>
		<string></string>
		<key>foreground</key>
		<string>#C99E00</string>
	</dict>
</dict>

Replace the color HEX code inside the last <string> to one of the theme colors in your color scheme. (Example user here is for the Tomorrow Night Bright color scheme.) 3. Save and replace existing file.

Result