Not a very important bug, more of a funny UI issue.
If someone were to quickly double press on the "Show / Hide colour indicators" (left upper corner) on the dorf2.php page the colour indicators themselves slowly misalign. Every time you do this again before the animation finishes they will get more out of alignment
After double pressing two times on the show/hide button:
Tested this on Firefox on Windows and Safari on OS X and they both have this issue.
(Server: TS5 NL, but most likely universal)