Tip To highlight angular ng-* attributes in html

gistfile1.txt

Open your theme file located at Packages/Color Scheme - Default/*.tmTheme 
find <dict> tag containing <string>Tag attribute</string>  and add section after 
<dict>
  <key>name</key>
  <string>Tag ng attribute</string>
  <key>scope</key>
  <string>entity.other.attribute-name.ng</string>
  <key>settings</key>
  <dict>
    <key>fontStyle</key>
    <string>bold</string>
    <key>foreground</key>
    <string>#FFF600</string>
  </dict>
</dict>

Open file Packages/HTML/HTML.tmLanguage
find section 
  <key>tag-generic-attribute</key>
  <dict>
...
 </dict>
 
and add section after
<key>tag-ng-attribute</key>
<dict>
  <key>match</key>
  <string>\b(ng-[a-zA-Z\-:]+)</string>
  <key>name</key>
  <string>entity.other.attribute-name.ng.html</string>
</dict>

then find 
<dict>
  <key>include</key>
  <string>#tag-id-attribute</string>
</dict>
and add below 
<dict>
  <key>include</key>
  <string>#tag-ng-attribute</string>
</dict>