Logic Behind this Challenge:
Ok, from what i can see right now, the image seems to be in different shades of a similar colour.
Using Gimp, i have derived the following HTML notation for the colours:
8B8B61, 8B8B61, 8B8B70, 8B8B6A, 8B8B65, 8B8B73
As we can see, the HTML notation for all the colours differ slightly. So let’s try converting the last portion of each colour from Hex back to Ascii.
The word that we got back is aapjes and that is the password to this particular challenge.