This enhancement applies to Collaborator, version 9.4 In document reviews, the new pushpins are being rendered with opaque background. The white background is covering the text under the pin....
Users are not generally aware that with more careful placement of pins, they can usually avoid obscuring text. Perhaps a warning could happen the first time a user obscures text with a push-pin.
However, there are times when if you hover over a pin, a mechanism to make it transparent would be extremely helpful.