are you sure you want to do this job yourself? a first rate shop will charge $200---$300 prep, paint, finished job, and undetectable results.

color, clearcote, thinner, reducer are gonna cost you over $100 if you do this job at home

BTW most bodyshops these days have their own mixing stations and computer programs to mix/match your color.

the dark silver grey 240 is the most elegant vehicle ever made. i had to scrap my same color 1990-240 recently after sacrificing-it-to-the-road-god, replaced it with a 1993 lite silver grey, don't 'enjoy' it as i did my 1990. good luck