cf9cfcd463d40a868f8ee73dead17ff8071dce2f
max
  Fri Sep 25 03:00:20 2026 -0700
CRISPR tracks: expose colorFields dropdown to color guides by off-target
specificity (MIT score) or by Moreno-Mateos efficiency, as alternatives to
the default Doench/Fusi-based itemRgb color. The bigBed already carries
these as the _specColor and _crisprScanColor extra fields; no data rebuild
needed.

diff --git src/hg/makeDb/trackDb/trackDb.ra src/hg/makeDb/trackDb/trackDb.ra
index 3ed9dd2b761..a56e2d0e492 100644
--- src/hg/makeDb/trackDb/trackDb.ra
+++ src/hg/makeDb/trackDb/trackDb.ra
@@ -289,30 +289,31 @@
     html crispr
 
     track crisprTargets
     shortLabel CRISPR Targets
     longLabel CRISPR/Cas9 -NGG Targets
     visibility dense
     type bigBed 9 +
     itemRgb on
     parent crispr
     mouseOverField _mouseOver
     scoreLabel MIT Guide Specificity Score
     # details page is not using a mysql table but a tab-sep file
     detailsTabUrls _offset=/gbdb/$db/crispr/crisprDetails.tab
     url http://crispor.gi.ucsc.edu/crispor.py?org=$D&pos=$S:${&pam=NGG
     urlLabel Click here to show this guide on Crispor.org, with expression oligos, validation primers and more
+    colorFields default="Efficiency (Doench/Fusi)" _specColor="Off-target specificity (MIT score)" _crisprScanColor="Efficiency (Moreno-Mateos)"
     html crispr
 
 track crispors
 superTrack on
 shortLabel Crispr kMers
 longLabel WGE Crisprs from Ensembl release v89 and kMer locations
 group genes
 visibility hide
 type bed 3
 html crispors
 release alpha
 
     track crisprEnsembl
     parent crispors
     shortLabel WGE Crisprs