I use DataFilterAutoFilter frequently for multiple columns. When a filter
has been used on any column the "triangle" marker on the tab changes from
black to blue. Because I frequently work with my sheets at 75% I have a
problem distinguishing one color from another so can't always find the
columns I've filtered. It would be very helpful if the entire tab changed
color, or if that 's not possible, change the "triangle" to a bright color
such as red, pink, or orange.

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