I am trying to upload a custom BED track to the UCSC Genome Browser. This track contains annotations from ChromHMM's 15-state model, i.e.
chr10 0 119600 15_Quies chr10 119600 120400 1_TssA chr10 120400 136200 14_ReprPCWk chr10 136200 139400 15_Quies chr10 139400 145200 9_Het chr10 145200 162800 15_Quies chr10 162800 165000 9_Het chr10 165000 176200 15_Quies chr10 176200 176600 7_Enh chr10 176600 177000 5_TxWk
What I want to do is to visualize this track with a different color for each annotation. However, the closest track parameter I can find is itemRgb = On, and to use that I would need to manually add a separate color for each annotation in the BED file. Is there an easier way for me to do this, or if not, is there a one-line command I can use to add in the RGB values?