Also, WRT paint gloss level- no, it's not a standard. Get sample cards from 10 paint companies and you'll see at least 8 varieties of 'semi-gloss' that don't look the same, some have 'eggshell' that looks like satin and most don't even use the same word to describe the gloss of interior and exterior paints. Now, if you want to compare automotive finishes, you'll find a more limited palette- more colors, fewer levels of gloss. Then, there are finishing materials that are called 'Custom' and they can be all over the map WRT gloss. What is your reference for the 'true satin' that you mentioned?