Color ramp for over-representation analysis (ORA) heatmaps
ORA_COLORS.RdTwo-color ramp for ORA significance heatmaps, from white at no enrichment to
purple at the strongest -log10(p). Pass it as the colors
argument of TMSig::enrichmap().
Examples
if (FALSE) { # \dontrun{
TMSig::enrichmap(ora_results, colors = ORA_COLORS)
} # }