Add reset color order section to figures.md

Added section on resetting color order in MATLAB figures.

Author: jAniceto

programming-notes/matlab/figures.md

@@ -3,3 +3,18 @@
 Hierarchy of Figure objects.
 
 <img width="399" height="290" alt="v2_gobjects_top-01" src="https://github.com/user-attachments/assets/ef906218-3256-4932-a98e-2091c0b706b3" />
+
+
+
+## Reset color order
+
+```matlab
+set(gca,'ColorOrderIndex',1)  % reset color order for plot
+```
+
+or
+
+```matlab
+ax = gca;
+ax.ColorOrderIndex = 1;  % reset color order for plot
+```