painting original

[1963chevyC_10]

1963 chevy c 10 so this truck was my great granpas and my grandparents new i was looking to restore a 60s truck so they just gave it to me. so it means alot to them and me for this thing to come out as original as possibe. well it just needs to look like the same truck its 507 brigade blue with a brownish interior color. someone told me to look on jim carters website. and the color they have for interior is for 64-66. and i know there are alot of differences in these trucks are the interior colors the same? if i can find if there is a code on the truck somewhere ill just have my body shop mix me something close. and was the firewall painted the same color as the interior? cause it looks like the same brownish color on the firewall. thanks for any help cody