I found the current color for constraint relation line is hard to see a little bit.

I've tried to change the "wire"color in the Theme setting panel, but it seems not work for the relation lines.

enter image description here

Thanks for your guide.


3 Answers 3


I see your point. It puzzled me a lot, too.

Currently I found that the only way to change the relationship lines for constraints are nothing but the "Grid", not the "Wire".

But, This is really not good for distinguishing the constraint lines from the background, including grid, by doing this. It seems that they are mixed together.

I also hope it may draw dev's attention to improve this. As I said, it's really not good to tweak two different thing by one single option.


Change constraint line colour

This can be set in the File | User Preference… | Themes. It uses a mix of Interface | Axis Colors | Z Axis and 3D View | Theme 3D View | Grid.

  • 1
    $\begingroup$ Hmm... I think you are half right. As Leon Cheung said, the "Grid" also affect its color partcially. So I bet it is a tweak mixed by Grid and Z Axis? I'm still wondering why it behaves like this...probably kinda bug? $\endgroup$
    – Sky Raker
    Commented Jul 23, 2013 at 13:08
  • $\begingroup$ Right you are, updated to include that. $\endgroup$
    – Aldrik
    Commented Jul 23, 2013 at 13:23

Better late than never!

I was able to change this here:
Themes > User Interface > Axis & Gizmos > Z

Constraint color change


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