@Karl_K or @Garry H (Cut Nut) can you comment further on the arrows?
I've never seen a grey arrow on an IS image. I've seen translucent arrows in actual photos, and it was my understanding this was because the pavilion angle was too steep. In particular, perhaps a 41.2 angle that is a tipping point for leakage or partial leakage anyhow.
However, on an IS image I would have expected to see a light red/pink arrow as opposed to grey.
With the above logic, the arrows in the 8 & 9 o'clock positions would be more inline with what I would expect to see. The grey arrow at 2 o'clock is just bizarre to me.
I should clarify that I understand the black is obstruction of the camera/head over the diamond. I am thinking since some of these arrows appear normal, the others may have potential issues.
Am I overthinking it?
Edited to Add:
Link of example diamond with steep pavilion & translucent arrows.
.0.90 Carat D-VVS2 Excellent Cut Round Diamond
1906000 - This 0.90 Carat Round diamond D Color VVS2 Clarity has Excellent proportions and a diamond grading report from GIAwww.jamesallen.com