Window indicators of Unity dock bar are too small

I am guessing that this might be just bad design than a bug, but anyway.

At least on my resolution the window indicators of the Unitys left hand dock way too small to provide reasonable usability. I am talking about the microscopic grey dots and arrows on the right and left side of the application, which has windows open.

On my display resolution these arrows and dots are about 1x1mm in size, making them difficult to see in case:
- You have less than perfect eyesight (mine is perfect though)
- I have bigger dust and dirt particles on my screen - many work PCs that are used hard and travel a lot tend to have that
- In bright light conditions
- They are so small that they are neglected by new Unity users, who are not aware what to look for

Switching from applications and windows to each other is one of the basic features of desktop UI. This functionality should have obvious visility and accessibility. The size of the indicators on this my resolution is way too small. Also the color scheme (grey on violet) lacks contrast to make it even worse.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.8.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.95-0ubuntu1
Architecture: amd64
CasperVersion: 1.312
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Sun Apr 1 06:34:30 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
MachineType: Dell Inc. Latitude XT2
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 TERM=xterm
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: initrd=/ubninit file=/cdrom/preseed/hostname.seed boot=casper quiet splash -- BOOT_IMAGE=/ubnkern
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/03/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd05/03/2011:svnDellInc.:pnLatitudeXT2:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude XT2
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.2-0ubuntu4
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2