Yes the arrow is clear, and can be seen over the items inserted in the map.
Please do not change it.
If you really don't like it that much you could always change the arrow.x file in the entiybank/_markers folder.
But you will have to replace it at every update as the installer will over write it each time.
I did this in classic to the light marker, making it a bit bigger to see.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 4gb RAM, Nvidia gtx660, Windows 7 Pro 64bit