Washing does effect both the insulation and waterproofing material. Also they should never be washed in other than cold water for the above and the camo pattern longevity. You should use a sport wash vs regular detergent for washing/cleaning outer garments. It is concentrated so make sure not to over use the product. Though I am sure you were just going to throw in the washing machinewithout soap to try and tone down the jacket, FYI for the future. Sport wash can be bought at most sporting good or outer wear retailers. I am not talking about the stuff they market to hunters but rather stuff they sell for outer wear garments of all types.
As far as the brightness and not a perfect match I don't believe in blending being the only or the most effective way to conceal a human from game eyes. For my perspective break up of your silhoutte is far more important to concealment, eliminating the blob appearance. Max 4 of all the realtree patterns is effective at break up, the background is close to natural that you will not appear out of the ordinary. Their vision is not like humans, they see different spectrums of colours and shades, as long as they don't see a solid block they should paylittle attention to the unmoving object

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In rifle season we have to wear solid colours here and I have had no trouble getting game close then vs the use of camo, the main reason is attention to detail when picking your ambush spot. Backing is extremely important, not skylighting yourself by fiunding natural depression to sink into the landscape and of course gross movements. Sorrythe long wayto say enjoy your new jacket.