So I generally used a light yellow for my black and white stuff. Now for a new lens I scored a nice B+W #23 filter for a bargain. It's a "dark yellow" I had a yellow and a light yellow jumping to light red and deep red. Ideally, I want a light yellow MRC. Am I being too picky about it? The difference is probably minimal What do you think? I generally like keeping the light yellow for all my BW stuff. Would you buy an MRC #21 if you had a single coated 23?