What is the name of the color setting for method name highlighting after clicking it in "Structure" pane?

Hi, all!

I use Rider with the theme "Rider Dark". When I click a method name in "Structure" pane, it's highlighted in the editor, but the highlight is kind of dim and it's not clear what is actually highlighted. I could not find the color setting for this highlight.

So could anyone please give me this setting name?

JetBrains Rider 2021.2.1
Build #RD-212.5080.71, built on August 26, 2021
Licensed to Rider Evaluator
Expiration date: November 4, 2021
Runtime version: 11.0.11+9-b1504.16 amd64
VM: Dynamic Code Evolution 64-Bit Server VM by JetBrains s.r.o.
Windows 10 10.0
.NET Framework 4.0.30319.42000
GC: G1 Young Generation, G1 Old Generation
Memory: 1500M
Cores: 16
Registry: debugger.new.debug.tool.window.view=TRUE, ide.tree.horizontal.default.autoscrolling=FALSE, ide.tooltip.showAllSeverities=TRUE, ide.mac.bigsur.alerts.enabled=TRUE, show.diff.preview.as.editor.tab.with.single.click=TRUE, ea.enable.developers.list=FALSE, parameter.info.max.visible.rows=10, ide.win.file.chooser.native=TRUE, ide.mac.file.chooser.native=TRUE, search.everywhere.pattern.checking=FALSE, performance.watcher.sampling.interval.ms=200, ide.borderless.tab.caption.in.title=FALSE, awt.file.dialog.enable.filter=FALSE, debugger.show.values.use.inlays=TRUE, performance.watcher.unresponsive.interval.ms=1000, vcs.enable.add.ignored.directories.to.exclude=FALSE, ide.allow.merge.buttons=TRUE, use.winp.for.graceful.process.termination=FALSE, ide.tooltip.initialDelay=0, ide.require.transaction.for.model.changes=FALSE, ide.debug.in.title=TRUE, rdclient.asyncActions=false