DYEING an OLD BLACK/PURPLE for rug repair job

Here are the dye results for my
OLD BLACK/PURPLE
nice but not a match yet. . .. . . it is difficult to get that old colour
even harder is to take a photo and put it here online and have the true colour . . . .
I need help in that dept. . . .
for 1/2 yard Natural and all Majic Carpet dyes . . . .
1/4 teas Black
1/8 teas Blue
1/4 teas Blue-Violet
1/8 Red -Violet(old one)
1/8 Bottle Green
+1cbw -all solution in pot-you can stir or blotch it for different values