Whenever the female Veilmaster fuses a candidate's condensed shadow essence into the pure white crystal sphere, the shadow tries to 'corrupt' the light in the crystal sphere or stain it like ink staining a white canvas.
However, because the quantity of shadow essence was not enough to fully 'corrupt' the light, the light would eventually fight back and the shadow essence would recede.
Before the feamle Veilmaster pushes a condensed shadow essence into the crystal sphere, she waits a few seconds so that the shadow essence in it is completely destroyed by the light.
Jorra and Merath's fused condensed shadow essence was the first to taint the entire crystal.
The pure white crystal emitted no light, and it was grey.
And while the female Veilmaster and the other candidates were stunned by the number of points the duo had gotten, the shadow essence receded as it was used up, thereby making the light to shine once again.
