# Multi-colored tick labels in bold, redux

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Leo Simon on 17 Apr 2020
Edited: KSSV on 18 Mar 2021
From this thread I learned from @Tommy how to create individually colored tick labels, using the Label function defined in the code below. In this thread, @JanSimon says how to create bold face tick labels. But this suggestion doesn't seem to work. If you run this code to the keyboard, you'll see the colored tick labels, but they are in a very wishywashy pallette. I'm hoping that switching to bold face might help, but when I dbcont to the next line, the labels disappear. I thought the problem maybe related to needing two backslashes in front of the lambda 's but that doesn't help either. Could somebody please explain what I'm doing wrong? Thanks very much
n = 4;
C = [ ...
0.5142 0.7695 0.7258 ;
0.9300 0.8644 0.4048 ;
0.6929 0.6784 0.7951 ;
0.9154 0.4668 0.4158 ;
0.9227 0.6565 0.3574 ;
0.6528 0.8096 0.3829 ;
0.6856 0.4668 0.6893 ;
0.7914 0.7914 0.7914 ;
0.9191 0.7476 0.8352 ];
Label = @(ii,s) sprintf('\\color[rgb]{%f, %f, %f}%s', C(ii,:), s);
Y = sort(rand(n,n));
h = plot(1:n,Y);
for ii=1:n;
h(ii).Color=C(ii,:);
end
set(gca,'XTick',1:n);
legend
for ii=1:n
XTickLabel{ii} = Label(ii,['\lambda_' num2str(ii)]);
end
set(gca,'XTickLabel',XTickLabel);
axesH = gca;
axesH.XAxis.TickLabelFormat = '\\textbf{%g}';
keyboard;
axesH.XAxis.TickLabelInterpreter = 'latex'

dpb on 18 Apr 2020
Looks mostly to be the choices for the rgb triplets aren't very distinctive, but a contributing factor is there just aren't many pixels set.
You don't need anything fancy to set bold font, just modify the Label function:
Label = @(ii,s) sprintf('\\color[rgb]{%0.3f, %0.3f, %0.3f}\\bf%s', C(ii,:), s);
This is all standard TeX, w/ the TextInterpreter stuff you needs must escape any LaTeX with  and, of course, when you turn it on, all the standard TeX stuff goes south. You can't mix the two...
dpb on 18 Apr 2020
I honestly don't know if there are different renditions of greek symbols with changing fontname or not...I've never explored in depth to know.