Tamiya Paint Reference

In the paint scheme for the Tamiya USS Missouri, the following paint recommendation appears:

XF-50:5+XF-2:2

Whats this mean? I know the XF-50 and XF-2 are colors, but don’t understand the rest. Is it a mixture of 5 to 2?

By Jove, you’ve got it!

I have made the sugestion to Tamiya customer service to make a color chart showing the mixing ratios for the FS color system. I would buy the booklet. Greg.