PITCH ACCENT color codes for Anki cards! https://cesartalvez.com

card.html

<!-- You can drop this into the Nihongo 2000 Core and it works! Just remember to add the Pitch Pattern field -->
<a 
   class="{{Pitch Pattern}}" 
   href="https://www.gavo.t.u-tokyo.ac.jp/ojad/search/index/sortprefix:accent/narabi1:kata_asc/narabi2:accent_asc/narabi3:mola_asc/yure:visible/curve:invisible/details:invisible/limit:20/word:{{Vocabulary-Kanji}}">
pitch

</a>

style.css

a.atamadaka {
 color:red; 
}

a.heiban {
 color:blue;
}

a.nakadaka {
 color:orange;
}