Here is a mars report performed with the 80mm scopetech refractor under average good images, for the aperture.
The sky was transparent between clouds.
Hellas was actually bright towards Hellespontus. for both filters, blue W80A and deep yellow W12.
Aeria-Arabia was bright also at the limb with the similar extension, blue and yellow channels.
Chryse was relatively bright also, same color channels, with a whitish cloud on Margaritifer Sinus, blue channel.
Conspicuous north polar hood well present, blue and deep yellow color channels.
Neiridium Fretum towards Argyre was clear.
The south polar area appeared clearer than the surrounded area.
This is not possible to conclude that dust veils are purely dusty but rather misty with a strong ratio of white haze included.
The other possibility could be rather more distinct clouds, dust near the ground, white cloud above, mainly.
This needs a narrow survey, again, for a straight advise.
More than admitted.
80mm is enough for such, considering the planet size, 14,46" size.