The colors I use vary - but mostly it is #708090, #425B76, #ff6600, and occasionally #1592AD (but the problem ocur regardless of the choice of color)
Regarding the modal-popup error - it's pretty simple:
In the text mode, I format two columns, in which I place a formatted header divs
<div class="myHeader"><p style="color:#fff;"> HEADER TEXT</p></div>
I save - and everything looks great.
Then I disvover a text error, let's say a missing comma - and I enter the comma into the text, and save
and goes to frontend - and now my header div is gone.
When going back to the modal-popup - edit mode - code editor - I can tell that my <div class="myHeader"></div>
is gone, and I have to re-write it... just to have the same thing happening again when making the next text-edit.
Sometimes I have seen the column formatting disappear too - but I can't recall the exact patterns.
Hope that makes sense
:)
J-)