The DC-6 that is needed for those colours is the DC-6A (or -6B with cargo doors). The KLM repaints I made are for the shorter fuselage DC-6. But...
Hans U. Hermann made a great repaint of "our" Six. The repaint is available at Avsim.com as 'Air Atlantique DC-6A Liftmaster' (dc6klm01.zip). You will need The CalClassic DC-6B with spinners by Greg Pepper & Tom Gibson (available at CalClassic.com).