Column from Examples column header is nearly unreadable

I love the new, darker highlight color; the previous yellow on white palette could be really hard to see sometimes.

However, I just noticed a wrinkle in the new color scheme: When adding a column from examples, the text in the column header is black on dark green (i.e. the opposite of the old problem of yellow-on-white, ironically). The text should probably be white... it's like this everywhere else, so this column header just appears to have been overlooked.