Hi Metin, do you mean the small xyz tripod in the lower left corner of the viewport?

The colors used for that can be adjusted in moi.ini - go to Options > General and push the "Edit .ini file" button. Inside of there the R, G, B values can be adjusted by these settings under the [View] section:

[View]
<....>
AxisIconXColor=160,160,160
AxisIconYColor=160,160,160
AxisIconZColor=160,160,160



> And one other thing: in the settings you can change the color for the X-axis and
> Y-axis viewport lines, but not for the Z-axis, resulting in the Z-axis getting the
> Y-axis color in views such as the right and front viewport, which I find a tad confusing.

Right now the way those axis colors work, is the "x axis" and "y axis" that are being referred to are not the world axis directions, but rather the local coordinate system of the viewport's own grid. So think of those as more like "horizontal grid axis" and "vertical grid axis".

In the future I will probably be changing that so that it can be colored by their world axis directions like you were wanting them, but right now there isn't any way set up to do that.

- Michael