I recently bought a 2012 Outlander XT it has some discoloration in the yellow paint and the black panels are slightly scuffed grayish in color how can I clean and restore these plastic parts thank you for your help

I recently bought a 2012 Outlander XT it has some discoloration in the yellow paint and the black panels are slightly scuffed grayish in color how can I clean and restore these plastic parts thank you for your help