Do you have an ohmeter? I can guess, but guesses are best left confirmed.
The 2 greens are likely each end of the secondary winding for the 6.3vac filament supply. They should read continuity only between themselves (low ohms).
The two yellows are likely each end of the secondary winding for the 5vac rectifier filament supply (assuming 5y3 type), and should read as above.
The 2 blacks are each end of the primary winding. They should read as above.
The 2 reds are likely each end of the HVac secondary winding.
The red/white is likely the HV secondary center tap.
The blue is likely a bias tap from the HV winding. You can expect readings between any of these, with the highest resistance between the 2 reds. Half of that resistance should be between either red and the red/white. Blue to one red should read lower than blue to red/white or blue to the other red.