Part number is 1851658.
They are the same green filters that you scroll down to, just a lighter shade of green.
Like a lot of parts these I believe were painted in batches.
In the past I have seen/owned two cases of 12 each and the colors varied in shade in both cases.
I have also owned some smooth ones, exact as the textured ones, print and all except the top M is not as pronounced as seen here, smoothie on the left.
Even the boxes were different shade and the one on left lacked the 10-26-6 reference