After reading a similar post in another forum, I looked at the open GL settings, turned off fast feedback and ok, then went back in and turned it on again.

And the colour went back to normal.
Something about true colour

Thankyou for your efforts

As much as I was hoping that would work, alas it did not.
The option to reset when R click on axis, 'reset' was greyed out.

Also, it's not just the axis, its also the colour palette. The colours when in the palette appear correct, yet when they are applied, or viewed in an existing su file, they are red blue transposed (red is blue, blue is red, green is unaffected, rgb that is)

Thanks for your efforts thus far
I have no idea what is causing this
Hasn't happened in any other software
: )

No. Just noticed it one day when I was using the software.

I'm using SU make 2015

The colours red and blue are transposed.
Vertical axis is red
Red axis is blue
Green (unless it has red or blue in it) is unaffected)
Materials that have red and/or blue in them are wrong

PC version

It still works - but everything looks wrong

: )