I wouldn't lose any sleep over it by the time you hunt they will be accustom to any abnormalities. The real key is movement and while they may not feel comfortable if they see no movement their alarm bell will not ring off...usually. I popped up my blind and it didn't really match the terrain at the time that evening I saw a number of deer, some looked in my direction but none were wary as they saw no reason to be alarmed.

As long as you don't impede their movements you should be AOK!