There were several shades of Mac yellow over the years. The commonly accepted rattle can color for the best 'average' match is Rust-Oleum Sunburst Yellow. OSHA Safety Yellow is another. Or, as mentioned, have it matched up while you still have some original color to go from. Powder coat would certainly be the way to go, but I've also had decent (and fairly rugged) results with Krylon Crystal Clear Indoor/Outdoor gloss clear coat over Rust-Oleum. My choice for black has been Rust-Oleum Satin, but there are also cooler options offering a certain degree of texture that more closely matches certain types of tank finishes. Others may chime in on what that actually is as it escapes me at the moment.
Depending on the version of 10-10 and how close you want to stay to original, you may find decals in any number of places..., Ebay being a starting point. Sugar Creek Supply would be another. They sell through Chainsawr, but I've found going direct is faster, less expensive, and less hassle in general. Joe Salva is the owner and does custom design work if he doesn't already have what you're looking for. Takes some time, but he does real nice work and is reasonably priced.
Pics when you're finished.