Why does a dark matt surface get hotter than a dark shiny surface?

Question

Why does a dark matt surface get hotter than a dark shiny surface?

Answer 1

black and dark coloured surfaces absorb heat but white or light reflect it.

Answer 2

The word "shiny" is your answer. If it reflects light it may well also reflect heat (infra red light), unlike the matt surface which absorbs it.

Answer 3

Your answer is partly in the question,the shiny surface is reflecting away some kinds of radiation;those you can see.If you could see the matt surface under a fairly low power microscope you would see  it as hills and caves; so a lot of radiation(heat and light)is trapped in the caves and absorbed.The matt surface is more nearly what scientists call a 'black body';one which traps all radiation falling on it.