if you are talking about paint as in liquid paint you can add light brown into it make sure the brown is a light shade and don't add to much
Flat paint leaves a dull finish.
no
Repaint it
shiny
No, there is no gold in red paint.
Talk2DIY Automotive - 1986 Dull and Hazy Paint Finishes was released on: USA: 6 May 2004
physical change
by using a scotch bright pad.....
I'll assume you mean "matte paint", in which case it is simply a paint which isn't reflective and has no sheen (ie. it isn't shiny) to it.
paint it gold
O2 (oxygen).
All you do is add orange and brown to yellow. Then you have gold paint.