"The Objective Marker visibility issue was first reported under Bug 0001328 in March 2013 and finally assigned to Moricky on June 28. Assigned priority LOW...hmmmm...not at all 'LOW' for those of us attempting to be helicopter or plane pilots in the game.....

The reason for this additional bug-report is that somewhere between Alpha and Beta, the Objective Marker color was detached from the Active Marker group by the Bohemia team and made non-changeable from White.. there does not appear to be any control on the Objective Marker color in the current ARMA3 Beta UI. A thin black outline may have been added to the (white) Objective Marker, but against the terrain trees etc, this is pretty ineffective." - kilkennycat Report #0011189