This is what I found.
Highway yellow in the spray can from Cat has a yellow color cap that does not match the contents.
All the highway yellow Cat paint I bought from Cat had the newer color yellow lid. The paint in the can matched my 22 and my small 20. I have found all the yellow spray cans have the same color yellow lid regardess of the shade of yellow in the can.
Long story short. Paint in can correct color. Paint cap wrong color. The part number is 206-6417 for highway yellow in the spray can.
I should have mentioned highway yellow is one of the old paint shades from the 1930s-1950s. It is a very bright yellow.
If your tractor has darker paint it may be the newer Cat yellow.
I had a backhoe painted last year and used the 'new Cat yellow'. Mixing orange enamel with the yellow at a ratio of between 15 and 20 to 1, will give a shade very similar to old Cat yellow, I believe. I have a pic. Can't help you if you need a spray bomb though. Phil