Thanks for the comments everyone. You're too nice
The red is a sept colour, yes?
Yes and no. My last Tau army was called the Mont'au rebels. They were modeled after a mix of German WW2 camoflauge schemes and a hodge podge look of multiple bands coming together with no sept colors.
The rebellion ended in a truce, and the Tau Empire carefully interviewed the remaining rebels and any that were believed to be suitable for duty (i.e., suitable for re-education) were absorbed into a one of three special Contingents (Tio've). Each of these three Contingents is attached (as needed) to a Sept Battle (Kavaal).
The Mont'au Rebels, now the Mont'au Tio've, have a regulation color scheme and insignia. Red being appropriate for the Mont'au
Your style is quite similar to my own- bold colours with sharp highlights. very anime!
I look forward to seeing them - link?