okomarov/schemaball node clockwise orientation

Dear MATLAB community,

I am using the excellent https://github.com/okomarov/schemaball by Oleg Okomarov to visualize the correlation between 50 sustainability indicators. Additionally to my question regarding node styling, I am struggling with orienting the nodes in a clockwise fashion. By changing

% Use tau http://tauday.com/tau-manifesto
tau   = 2*pi;
% Positions of nodes on the circle starting from (0,-1), useful later for label orientation
step  = tau/sz(1);
theta = -.25*tau : step : .75*tau - step;
% Get cartesian x-y coordinates of the nodes
x     = cos(theta);
y     = sin(theta);

to

theta = -.75*tau : step : .25*tau - step;

labelling and nodes now starts at 12 o'clock. However, I'd prefer the overall styling to in clockwise fashion. Right now it looks like

Does anyone know how to align the nodes clockwise? Any hints are greatly appreciated.

Best,

Philipp