The current flag on the South Sudan note is the dark blue variant with the tilted star.
According to Wikipedia, this is not preferred:
The flag of South Sudan with a deep-blue coloured triangle is often used. On August 25, 2023 the country's Media Authority released an advisory discouraging the use of such flag variant.
Instead, the sky blue version is recommended.
The colour scheme is specified on the Flag's wikipedia page.
The tilt of the star is still disputed, though the upright / non-tilted option seems to be more widely used.
The current flag on the South Sudan note is the dark blue variant with the tilted star. According to Wikipedia, this is not preferred:
Instead, the sky blue version is recommended. The colour scheme is specified on the Flag's wikipedia page.
The tilt of the star is still disputed, though the upright / non-tilted option seems to be more widely used.