Doors in a dynamic lighting hallway.

My players have a difficult time spotting doors in a map with dynamic lighting. I have taken to putting door icons on top of the map layer to indicate "hey guys, there's a door here!", but this solution is aesthetically displeasing. It really clutters up the map, especially since I usually need another icon on the other side of the door. Example below. Thoughts, tips and tricks that you guys use to indicate doors on your maps? Example: There are double doors directly above the character token that are very hard to spot, especially if the player is zoomed out. I have placed a door icon indicator near the door in the lower right corner for clarity. There is another one on the other side of the door.  

I know your pain.  I have tried making doors 'thick' on maps I have drawn, but the most 'pleasing' is to move the dynamic lighting slightly further away, so the party sees more of the walls.  This means using tiles with more wall actually drawn on them, and is a lot more annoying to put in the light barriers, but done well, looks nice.

Yeah, it is a pain!

On the dynamic lighting layer you presumably have your doors drawn in a different color as a separate drawing, right?  (so you can pick them up and move them once the party opens the door?) If so, just move that to the opposite side of the door as the PCs. Might be a bit more fiddling than you want to do while they are walking down the halls, though.