Hello Allen-
The Ryan looks beautiful! However, the colors mentioned in your post are NOT Randolph colors, they are Poly Fiber colors. Unfortunately, Poly Fiber recently bought out the Randolph aircraft division and no long make the Poly Fiber dopes. The Poly Fiber chart has the colors 105 Insignia white, 190 Tennessee red and 215 Dakota black on it. Too bad as the poly Fiber dope was the best I ever found. However, all is not lost. The present Randolph dealers are "mixing dealers" and make up the colors right in their dealerships. I was at one in Texas the other day and asked " Can you still mix the old Poly Fiber colors?" and they said yes. Try contacting Aircraft Technical Supply in Orient Ohio, I have purchased from them before and they are most helpful. They are at 877-877-3334 and can probably supply you with the Poly Fiber colors. Also, if you would like a copy of the Poly Fiber color chart, call me, I have several here in my stash.
Don Hutchinson