Mac Pages - Custom Author Color?

[macrospect]

I would like to use the Pages highlighting function (the "highlighting" that you apply with ⌘-shift-H and that comes with a comment box) in order to make comments throughout my large text documents (I write very long articles for my profession). However, the highlighting colors available by default (the ones listed among the "Author Colors") are all far too dark and make the document quite distracting to edit. Is there any way to change the author colors to appear as much lighter?

(I know how to hide the comments altogether, but I don't want to do this--so that I don't accidentally delete a comment I might need while editing with highlighting hidden.)