I want to precisely (as much as possible) color match my yellow. I'm still pretty sure the color that Gottlieb used was 'process yellow' as mentioned above, but the 'Process Yellow" air brush paint that i ordered is actually 'transparent'. Whoops. Didn't read close enough.
Well, a transparent 'process yellow' is not going to help me cover some of my bad spots, so it's back to color matching.
I was able to determine that the yellow on my playfield and the Createx opaque yellow are basically off by a small amount of 'magenta' (using a process somewhat similar to the below). Since I don't have any magenta handy, I decided to mix some up with some Createx red, blue and white. Got close enough, and added a few drops to a jar of yellow.
Put a drop onto a clear piece of mylar and waited for it to dry. It looks close, but I'm not sure. So I came up with a plan.
Once dry I took photos from two seperate areas of the playfield with both my 'matched' yellow and the playfield color.
I then added these photos to Photoshop. Using Photoshops eye-dropper tool Photoship will provide various color values for the area that was selected. You can see my Photoshop work below.
But what's really interesting is then putting all these different color values from Photoshop into a spreadsheet, and then getting the average of these colors. I used the 'average' function to get the aggregate total - believing that the average of the yellow from three different spots will be more precise than any single image (lighting issues and all that).
As it turns out, I'm pretty close!
I can also see that there is one area where my 'matched yellow' is off. It seems as if its not as strong is in the "Yellow" area of the CMYK value and also its a bit low in the 'Saturation' levels of whatever that set of values is.
So I need to find a way to bring up my 'yellow' up a bit more. That is going to be hard - Yellow IS a primary color. I may try a spot of orange just to see what happens. I may also mix in some Wicked Colors "Detail Yellow" as that seems a bit more 'saturated'.
Anyway, I thought this might be a good technique for trying to be a bit more 'scientific' with color matching rather than just trusting my eyeballs!
Color match analysis (resized).png