Stostone: Redesign aux marks

[x-sheep]

The green dots currently have a different style, because this puzzle has the "Drop Blocks" option which visually moves the blocks down. It's also possible for each block to be assigned a different color.

The small green circles with the lightgreen backgrounds are hard to see. We should consider changing them to smaller, more contrasting dots like in LITS or Norinori.

[elestrophe]

The green dots are already somewhat visually noisy when placed over clues. I feel that making them smaller might exacerbate this problem. Would it be possible to find an aux mark style which doesn't conflict with the clues?