perf top tui: Give color hints just on the percentage, like on --stdio

And like it was in the old top.

Another change so that the familiarity with the old visual is maintained.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ypmyx9p0ah4byqaygrnb09x8@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/ui/browsers/hists.c

@@ -579,6 +579,9 @@ static int hist_browser__show_entry(struct hist_browser *self,
 		if (!self->b.navkeypressed)
 			width += 1;
 
+		if (!current_entry || !self->b.navkeypressed)
+			ui_browser__set_color(&self->b, HE_COLORSET_NORMAL);
+
 		slsmg_write_nstring(s, width);
 		++row;
 		++printed;