For anyone interested, I've created a Google Sheets spreadsheet for all these. Should make searching/finding easier than going through pages of a thread. OP feel free to link it in post 1 if you like...maybe we can get a sticky as well?
Anyone should be able to add to it. If you have any issues or if I haven't included something in the dropdowns let me know and I will poke it with a sharp stick. I don't know if the alternate columns will be useful but they are there. If we need to add features and such let me know. Note, I've messed around with being able to filter the data as on a normal spreadsheet but because it changes the view for everyone there's no good way to do it yet. I'll keep exploring a method to do this without affecting everyone using the doc.
This is great, thank you.
I added a color, and also added a converter to convert from standard hue, in degrees, in cell i3, to the Gran Turismo value, using the formula:
hue in degrees ÷ 360 × 100 = Gran Turismo hue
I also added a link to an RGB to HSV Calculator. The hue values obtained from this need to be converted to Gran Turismo hue values; you can enter this hue value in I3.
I hope that these are helpful.